Why is the preaching of Christ crucified central to the faith?

Paul asserts in 1 Corinthians 1:23-24 that he preaches Christ crucified as it is the very power and wisdom of God. To the Jews, this message is a stumbling block due to their expectation of a conquering Messiah, while to the Greeks, it appears foolishness since they sought human wisdom. However, for those who are called, this seemingly foolish message reveals God's true power to redeem. The crucifixion of Christ is not merely an event; it is the focal point of salvation history and represents the ultimate sacrifice for sin. Through it, believers receive the gift of grace and are drawn into a vital relationship with God, making it paramount for the Christian faith.