By this gospel you are saved... Christ died for our sins according to the Scriptures, that he was buried, that he was raised on the third day according to the Scriptures...
The apostle Paul to the Corinthians in 1 Corinthians 15:2-4 (circa 55 A.D.)
Jesus alone is "the way and the truth and the life" (John 14:6). We know this because we have the testimony of the disciples who walked with the historical Jesus of Nazareth, witnessed his crucifixion (Luke 23:33), death (Luke 23:46), burial (Luke 23:53), resurrection (Luke 24:36), and ascension into heaven (Luke 24:51, Acts 1:9). In addition, countless believers testify to the life-changing experience of being "born again to a living hope through the resurrection of Jesus Christ from the dead" (1 Peter 1:3, John 3:3). God the Father "commands all people everywhere to repent" (Acts 17:30) and believe in his Son, Jesus, so that we may have eternal life in his name (John 6:44-47). God desires to regenerate our spiritually dead body (Ephesians 2:1-5) through the power of the Holy Spirit (1 Peter 3:18), so that we may have fellowship with our Creator-God. This close and personal relationship with the Father can only be achieved by believing into his Son, the Lord Jesus Christ (Acts 20:21).
We all have a spiritual health problem, namely, an inability to live as God originally intended (Psalm 53:2-3, John 4:24, Romans 3:11). The natural-born human cannot seek after the living God because of being born a slave to sin (John 8:34, Romans 7:14). The first man and woman, fashioned by God himself (Genesis 1:26-27), had only one restriction in their earthly paradise (Genesis 2:16-17). A single act of disobedience separated them from the author of life (Acts 3:15, 1 Corinthians 15:21-22). Similar to a genetic disorder that is passed down from parent to child, we inherited our ancestors' rebellious nature through their transgression (Romans 5:12). The only way to be justified in the eyes of the holy Father, is by the exercise of faith in his Son (Galatians 2:16).
No one knows when we will die (Ecclesiastes 8:8, Hebrews 9:27). Since we were made in God's image (Genesis 1:27), we are accountable to Him. Like a physician who wishes to rid your body of a life-threatening disease (Mark 2:17), God's holy nature requires the total eradication of sin and death (1 John 3:8, 1 Corinthians 15:26). The Lord God is angry with humanity because of our sin (Deuteronomy 4:21, 25:16, 1 Kings 11:9, Proverbs 3:32, 11:20, 16:5). John the Baptist, Jesus' relative (Luke 1:36), states that "Whoever believes in the Son has eternal life; whoever does not obey the Son shall not see life, but the wrath of God remains on him" (John 3:36, Psalm 2:12). The only way to be justified, in God's eyes, is to trust in the atoning work of His risen Son, Jesus Christ (Psalm 49:7, Romans 3:24-26). Jesus will one day return to the earth and judge both the living and the dead according to His Father's holy standard (John 5:22, Revelation 20:12-15). The penalty for rejecting God's gift of salvation (Ephesians 2:8) is eternal punishment, while whoever receives Christ Jesus as Lord (Colossians 2:6) inherits eternal life (Matthew 25:46).
Since Jesus already lived a perfect life and sacrificed himself in our place on the cross (Luke 23:33, Psalm 22:1, Mark 15:34) to satisfy God's holy judgement against our sin (John 1:29, Hebrews 9:26), the rest is relatively easy (Matthew 11:28-30, Romans 10:8, Deuteronomy 30:14). Respond to the Father and Son's effectual call (John 3:16, 15:13) today by confessing with your mouth that, Jesus is Lord, and believe in your heart that God raised Him from the dead, and you will be saved (Romans 10:9-10). The evidence of genuine faith is reflected in your commitment to repent of your former sins (Romans 2:4) and love and follow Jesus from now on (Mark 8:34-37, John 8:31, James 2:22).
Congratulations! If you truly have believed Christ's gospel (1 Corinthians 15:1-4) and confessed His name (Matthew 10:32, 1 John 4:15, Revelation 3:5), then know that you have eternal life (1 John 5:13, 2 Corinthians 5:17-21), and will live forever in God's heavenly paradise when you die (Luke 23:42-43, Hebrews 11:16). You are now washed, sanctified, and justified in the name of the Lord Jesus Christ by the Spirit of God (1 Corinthians 6:11). Your assurance of eternal security comes from the inward motivation by the Holy Spirit to cry out, "Abba, Father!" (Mark 14:36, Romans 8:15, Galatians 4:6). Jesus now desires that you be baptized in water as an outward sign of your internal baptism by the Holy Spirit (Matthew 28:19, 1 Corinthians 6:11). Study the Bible and find a local church that adheres to the aforementioned gospel (Galatians 1:9), where you can "grow in the grace and knowledge of our Lord and Savior Jesus Christ. To Him be glory both now and forever! Amen" (2 Peter 3:18).