How do we know Jesus' work of salvation is complete?

The phrase 'It is finished' uttered by Jesus on the cross signifies the completion of His redemptive work for His people. He declared that all debts owed to God were paid in full, confirming that there remains no additional payment necessary from us. Scripture confirms this truth throughout, as seen in John 17:4 where Jesus states He has glorified the Father by completing the work given to Him. Additionally, Hebrews 1:3 affirms that after making purification for sins, Jesus sat down at the right hand of God, indicating the end of sacrificial offerings and the sufficiency of His sacrifice.