What does it mean that God cannot overlook sin?

God's nature is inherently holy, which means that He cannot overlook or tolerate sin. The depths of Jesus’ forsakenness on the cross illustrate the severity of God's justice against sin. When Christ took on the sins of the world, He faced the full weight of God’s righteous wrath, proving that sin incurs separation from God. The statement that God 'forsook' Christ during this time serves as a stark reminder of how seriously God considers sin, ultimately highlighting the necessity for a perfect sacrifice. Jesus, being without sin, uniquely fulfills this requirement by enduring the wrath meant for sinners, thus allowing believers to stand forgiven before a holy God.