4. The Gospel
The fundamental message of the Bible is that God sent His Son, Jesus Christ, to die on the cross for our sins. God chose to send His Son to die for our sins because God is love, and God deeply loves everyone. The gift of salvation from our sins is available to everyone. However, to receive this gift, a person must accept Jesus Christ as their Savior and completely repent of their sins. Completely repenting from sins is a serious problem which prevents many people from being saved from their sins. The Bible acknowledges these problems when Jesus says: “If anyone would come after me, let him deny himself and take up his cross daily and follow me” (Luke 9:23). While following Jesus is extremely challenging, whoever believes in Jesus will have everlasting life in heaven.
God’s Love Is the Core of Christianity
The fundamental core of Christianity is that God is love. Many religions conceive that God is merely an abstract creator who omits Himself from everyone’s lives. Other religions conceive that many gods exist, and each god oversees different domains, such as the sky or the earth. Christianity is unique because God is defined by love. Love is not merely an action that God performs, but love is God’s very essence (1 John 4:8, 1 John 4:16).
Throughout the Bible, God demonstrates His deep love for mankind. The Bible says that God’s love is very active and selfless, not abstract (Lamentations 3:22-23, 1 John 4:9-10). God’s love is everlasting, and God has drawn humanity to Himself with loving kindness (Jeremiah 31:3). Nothing can separate Christians from God’s love (Romans 8:38-39).
The ultimate demonstration of God’s love for mankind is the sacrifice of Jesus Christ on the cross for our sins. The Bible says: “But God demonstrates His own love for us in this: While we were still sinners, Christ died for us” (Romans 5:8). God’s love is also sacrificial. The Bible says: “For God so loved the world that He gave His only Son, that whoever believes in him shall not perish but have eternal life" (John 3:16).
Within the Christian community, God’s love is not emphasized enough. Everyone must carefully realize that God was not required to send His son, Jesus Christ, to die on the cross for our sins. God choose to send His son to die for our sins because God deeply loves us (Romans 5:8, John 3:17). God loves everyone like a father loves his children (1 John 3:1). God also desires that everyone would become a Christian (1 Timothy 2:3-4). Further, nothing can separate us from God’s love (Romans 8:38-39).
Adam and Eve Sinned Against God
God created the world completely free of sin, and there was no sickness, death, or moral depravity (Genesis 1:31). God created Adam and Eve, and God commanded them not to eat from the Tree of the Knowledge of Good and Evil (Genesis 2:16-17). God created Adam and Eve with free will, and they had the genuine ability to choose to obey or disobey God.
Catastrophically, Adam and Eve decided to sin against God by eating from the Tree of the Knowledge of Good and Evil when they were tempted by the serpent (Genesis 3:6). By eating from the tree, Adam and Eve obtained an internal perception of morality, but they also actively sinned against God through their disobedience. Suddenly, Adam and Eve were shifted from a state of innocence to a mortal condition, and God banished Adam and Eve from the Garden because they had sinned.¹
For hundreds of years, theologians have debated why Adam and Even choose to sin against God. Fundamentally, Adam and Eve’s sin was an act of pride. When the serpent tempted Adam and Evil, the yearning “to be like God” was the supreme temptation (Genesis 3:5). The serpent was able to tempt Adam and Eve because their pride caused them to covet God’s ultimate wisdom and moral authority. The desire to be equal to God was a very strong temptation, and Adam and Eve succumbed to the serpent’s temptation.²
Who Is Satan?
The Bible identifies the serpent in the Garden of Eden as Satan (Revelation 12:9). Satan is the supreme adversary of God and mankind (Revelations 12:9, 1 Peter 5:8, Ephesians 6:11-12). Originally, God created Satan as a sinless and exquisite angel (Ezekiel 28:12-15), but Satan decided to rebel against God. When Satan rebelled, approximately one-third of the angels followed Satan (Revelations 12:4).
When God created Satan, he was a sinless cherub named Lucifer. Cherubim were fearsome guardians of God’s throne (Ezekiel 1:5-28). Cherubim are the second-highest order of angels, and cherubim are guardians of God’s glory. Normal angels are the third order, and they primary function as messengers to mankind (Genesis 3:24, Ezekiel 1:4-28, Ezekiel 10, Psalm 8:5, Hebrews 2:7).
As a cherub, Satan was a fearsome angel and a guardian of the throne of God. However, Satan was not satisfied with being a cherub; Satan desired to be “like the Most High” (Isaiah 14:14). Satan desired to seize God’s ultimate authority so that he would have complete power, independence, and worship. Satan’s fundamental goal was to rule over the angels and receive the worship of the angels and people (Job 38:7, Luke 4:7). Unfortunately, when Satan rebelled against God, Satan was able to deceiving nearly one-third of the angels to join with him in rebellion against God (Revelation 12:4).
After Satan rebelled against God, God expelled him and one-third of the angels from heaven. These angels are now referred to as demons, which are fallen angels who work with Satan to tempt people to sin against God (1 Peter 5:8). Despite their expulsion from heaven, Satan and the demons will never follow God or submit to God (1 John 3:8).
Sin Separates Humanity From God
When Adam and Eve sinned against God in the Garden of Eden, God removed them from the garden because they sinned against God. God also removed them from the Garden of Eden so they could not reach the Tree of Life in a sinful state. If Adam and Eve reached the Tree of Life in a sinful state, they would have been stuck in that sinful state without the possibility of redemption (Genesis 3:23-24).
Further, everyone inherits Adam’s sin and a sinful nature. The Bible teaches that Adam represented all of humanity. So, Adam’s disobedience against God was imputed to all mankind (Romans 5:12), and Adam’s sin causes mankind to inherit a fallen nature. Since everyone is born with a sinful nature, each personal will naturally sin also (Psalm 51:5).
God is completely holy, and God cannot condone sin (Habakkuk 1:13). God’s virtuous character also requires justice for sin (Romans 6:23). So, sin separates mankind from God (Isaiah 59:2). Sin produces an insurmountable spiritual abyss between God and mankind. This spiritual abyss causes spiritual alienation, and mankind cannot reconcile themselves with God by their own works.³
Jesus Christ’s Sacrificial Death Provides Forgiveness of Sins
Throughout the Bible, God reminds us that we need a savior. In the Old Testament, the sacrificial system was used to temporarily cover our sin, but a perfect sacrifice was required for sin (Isaiah 43:11). Also, the law and the Ten Commandments reveal humanity’s flaws and our need for an ultimate sacrifice (Romans 3:20).
Sin is breaking God’s law, and the penalty for sin is death (Romans 6:23). To completely resolve the penalty for mankind’s sins, God decided to send His son, Jesus Christ, to die on the cross for our sins. Jesus Christ is the ultimate sacrifice, and Jesus willingly died on the cross in our place. Through Jesus’ death on the cross and resurrection from the dead, Jesus became the “atoning sacrifice” for our sins, which satisfies God’s holy justice (1 John 2:2).
Jesus Christ’s sacrifice on the cross atoned for our sins against God, and it also provided a method to break the grip of mankind’s sinful nature. God offers the free gift of salvation from our sins to everyone (1 John 2:2). However, a person must have faith in Jesus and completely repent of their sins to accept Jesus as their Savior (Mark 1:15, Acts 20:21). In the Bible, accepting Jesus and repentance from sins are completely connected. Repentance involves recognizing your sins, turning away from your sins, and earnestly returning to God (Acts 3:19).
When a person chooses to accept Jesus as their Savior and completely repent of their sins, a profound inward transformation occurs immediately. A new believer is spiritually reborn, and their previous feelings of guilt are replaced with peace. Further, a new believer beginnings to realign their personal desires with God’s plans.⁴ While this immediate transformation is completely total, the daily outworking is a lifelong journey for every believer. For example, old temptations will not immediate disappear. However, new believers will receive a new nature which strives to grow by studying the Bible and praying to God each day.⁵
How Can A Person Be Saved From Their Sins?
The Bible says that salvation from sin is a gift that God provides for everyone. In order to be saved, a person must truly believe that Jesus Christ is the Son of God, that Jesus choose to die on the cross to pay the penalty for mankind’s sins, and that Jesus rose from the dead. Also, a person must completely repent of their sins, turn from their old sinful lifestyle, and choose to follow God (John 3:16, Romans 10:9, Ephesians 2:8-9).
While is seems relatively simple to accept Jesus as your Savior and follow Him, following Jesus is unbelievably challenging. In the Bible, Jesus says: “If any of you want to be my followers, you must forget about yourself. You must take up your cross every day and follow me” (Luke 9:23). Choosing to follow Jesus involves a complete surrender of your earthy comforts, personal control of your life, and even your life for Jesus Christ’s kingdom.⁶ While these requirements are everything, the Bible teaches that our reward in Heaven is priceless (Matthew 13:44).
Many people desire to be saved from their sins and go to heaven, but very few are willing to completely repent of their sins and follow Jesus every day. For example, many unrepentant people will refuse to repent of their sins because they enjoy sinful lifestyles, such as being very wealthy (Revelations 9:20). However, everyone must remember what Jesus says in Mark 8:36: “What good is it for someone to gain the whole world, yet forfeit their soul?”
Understanding The Trinity
The Bible teaches that only one God exists, but God exists as three separate Beings: the Father, Jesus Christ (the Son), and the Holy Spirit. The word “Trinity” is not found in the Bible, but the concept of the Trinity is revealed in the Bible. The official doctrine of the Trinity was established during the 4th century.⁷
The relationship between Jesus Christ (the Son) and the Father is essential to understand. The Father did not create Jesus Christ. Rather, the Father eternally “begot” Jesus Christ, which means that Jesus Christ has the same divine nature and no beginning (John 1:1, John 1:14, John 3:16, Hebrews 1:5). The Father and Jesus Christ are both co-equal and co-eternal components of the Trinity (John 10:30, Revelation 1:8, Revelation 1:4). Further, when Jesus Christ died on the cross for our sins, only His physical body perished, but Jesus’ spirit was still completely alive and conscious (Luke 23:46, Luke 23:43).
The Holy Spirit is third individual of the Trinity. The Holy Spirit is also eternal, and the Holy Spirit shares all of the attributes that God has. The Holy Spirit was involved in the creation of the world (Genesis 1:2). The Holy Spirit indwells and empowers believers after they are saved from their sins (Ephesians 1:13, Roman 8:11).
Several verses in the Bible describe the Father, Jesus Christ, and the Holy Spirit. For example, when Jesus Christ was baptized, the Father speaks, the Son is physically baptized, and the Holy Spirit descends upon Jesus Christ like a dove (Matthew 3:16-17). Further, Jesus commissioned His followers to baptize new disciples during the Great Commission. Jesus said: "Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit" (Matthew 28:19).
What Happens At The End?
In the Bible, the book of Revelation describes the end. Theologians have debated for hundreds of years whether the events described in Revelations 6 have begun. Most theologians agree that Revelation 6 has not begun yet. The viewpoint holds on the concept that the opening of the seals in Revelation 6 describes a seven-year Tribulation period which has not started.⁸
The seven-year tribulation is the start of God’s judgments against mankind’s sins (Revelation 5). God uses war, famine, and death as punishments for humanity’s sin (Revelation 8 and 9). At the midpoint of this seven-year tribulation, the Antichrist will force people to follow him using intimidation, economic control, and death (Revelation 11:2-3). At the end of the tribulation, Jesus Christ returns and defeats the Antichrist (Revelation 19:11-21).
After the Antichrist is defeat, the Millennium begins, and Jesus rules for 1,000 years on earth (Revelation 20:1-6). After 1,000 years, the Millennium ends, and Satan is temporary emancipated to deceive mankind. However, Satan and his followers are defeated by God (Revelation 20:10). Immediately afterward, everyone is judged based on their personal actions and deeds, and if their names are in the Book of Life. The Book of Life contains the names of everyone who accepted Jesus as their personal Savior (Philippians 4:3, Revelation 20:12-15). If a person’s name is not in the Book of Life, they are sent to the lake of fire.
God then creates a perfect heaven and earth. God will reside with all His believers eternally. In heaven, there will be no sin. Further, the Bible says: “death shall be no more, neither shall there be mourning, nor crying, nor pain anymore" (Revelation 21:4). Heaven will be perfect, and Heaven will last forever.
Conclusion
The fundamental core of Christianity is that God is love. God deeply loves everyone, and God choose to send Jesus Christ, His Son, to die on the cross for everyone’s sins. It is essential that everyone realizes that God was not obligated to send His Son to die for our sins. God choose to send His Son to die for our sins. Further, God offers the free gift of salvation to everyone. In order to be saved from our sins, everyone must accept Jesus Christ’s as their Savior and repent of their sins. While following Jesus will cost you everything, Jesus says in Mark 8:36: “What good is it for someone to gain the whole world, yet forfeit their soul?”
References
1. Barnett, T. (2025, October 3). How Could Adam and Eve Sin If They Didn’t Know Good and Evil? Stand to Reason. https://www.str.org/w/how-could-adam-and-eve-sin-if-they-didn-t-know-good-and-evil-
2. Lacey, T. (2025, August 19). The First Sin. Answers in Genesis. https://answersingenesis.org/sin/the-first-sin/
3. Davey, S. (2025, April 16). Sin Separates Us from God: Why It Matters and What We Can Do About It. Wisdom International. https://www.wisdomonline.org/blog-detail/sin-separates-us-from-god/
4. Merritt, J. (2025, August 12). True Change of Heart. Touching Lives. https://www.touchinglives.org/devotionals/true-change-of-heart
5. Parks, C. (2019, January 17). 8 Steps for Real Repentance from Psalm 51. The Gospel Coalition. https://www.thegospelcoalition.org/article/steps-repentance-psalm-51/
6. Piper, J. (2018, January 29). Following Christ Is Costly – But How Do You Count the Cost? Desiring God. https://www.desiringgod.org/interviews/following-christ-is-costly-but-how-do-you-count-the-cost
7. Samples, K. (2023, August 21). Is the Trinity Revealed in Scripture? Reasons To Believe. https://reasons.org/christianity/beliefs-values/is-the-trinity-revealed-in-scripture
8. Casey, Z. (2024, October 5). What Will Happen At The Final Judgment. City Awakening Church. https://cityawakeningchurch.com/resources/revelations/what-will-happen-at-the-final-judgment