How do we know that Jesus finished the work of salvation?
Answered in 2 sources
Jesus confirmed this in John 17:4, saying, 'I have finished the work which thou gavest me to do,' which assures us of our completed redemption.
In John 17:4, Jesus proclaims, 'I have finished the work which thou gavest me to do.' This powerful statement assures believers that the conditions for salvation have been fully met through Christ's sacrifice. His work on the cross paid the full penalty for sin, and with His declaration of 'It is finished,' He confirmed that nothing more is needed for our redemption. This doctrine of Christ's finished work underpins the assurance of salvation for all who believe.
Scripture References:
John 17:4, Hebrews 7:25, Ephesians 1:4-5
Commentary