The quick answer is that Jesus died on the cross to provide the way for us to receive forgiveness from our sins. (Not that we have received it but rather providing the way) The Bible provides many details regarding this sacrifice of Jesus. As we study the Bible, we understand more and more of salvation and forgiveness.
When we say “Jesus died for our sins,” we are saying that He died because of our sins. Sin leads to death (Romans 6:23). We were sinners consigned to death, and we had no way to stop sinning. (for all have sinned, are sinning, do sin) Jesus came into our world and lived a perfect life, so death had no hold on Him. Yet, in His grace, Jesus chose to die on our behalf. He took our punishment for us. As He died “for our sins,” as our substitute, He prayed that we would be forgiven. Since our penalty has already been paid, God will forgive all who put their trust (believing in, clinging to, relying on) in Jesus.
Jesus’ death means that we have access to God. In John 14:6, Jesus says, “I am the way, and the truth, and the life. No one comes to the Father except through me.” Sin had separated us from God, (and assigned us to death/hell) but, at the moment of Christ’s death, the veil in the temple, separating the priests from the presence of God, was ripped in two (Mark 15:38). (so that we might go boldly before the throne of God in Jesus Christ)
Jesus’ death means that the sacrifices of the Old Testament Law are no longer needed. In previous times, various offerings were required by the Law as atonements for sin. Yet these sacrifices were only temporary. With the sacrifice of Jesus, we were provided a perfect, one-time atonement from sin (Hebrews 10:10).
Christ’s death means that we are guaranteed forgiveness of sin when we accept (believe in, cling to, rely on, trust, follow, obey) Jesus as Lord. Galatians 3:22 says, “the promise by faith in Jesus Christ might be given to those who believe.” Jesus purchased our salvation on the cross by becoming sin for us (2 Corinthians 5:21) (so that by believing and having faith in Him we will be saved). That is, He became the guilty one on our behalf.
Salvation is by God’s grace through faith (Ephesians 2:8-9). It is made possible through the cross of Christ. “Christ also died for sins once for all, the just for the unjust, so that He might bring us to God” (1 Peter 3:18 NASB). (Compelling Truth)
