What does the Bible say about Jesus' success as a Savior?

Scripture explicitly teaches that Jesus, as the Messiah, fully accomplished the work the Father gave Him to do. In Isaiah 42:4, it declares, 'He shall not fail.' This promise reassures believers that Christ's redemptive work is complete and sufficient for salvation. His mission was not left undone but fulfilled to its entirety, leading Him to declare on the cross, 'It is finished.' This triumph over sin offers comfort and encouragement to believers, reminding us that our salvation rests not in our efforts but in the finished work of Jesus Christ.