Why is the sufferings of Christ central to the gospel?

The sufferings of Christ form the heart of the gospel message, as outlined in both 1 Peter and the letters of Paul, such as Galatians 1:4. Jesus’ sacrificial and substitutionary death is what delivers believers from the kingdom of darkness and provides reconciliation with God. His suffering was not in vain; it was part of God's divine plan to atone for sin, fulfilling the justice that God's holiness demands. The concept of substitution underscores the belief that Christ died in the place of His people, effectively taking on themselves the penalty for sin. This is foundational to sovereign grace theology, which teaches that salvation is wholly dependent on Christ's finished work.