What does 'It is finished' mean in relation to salvation?

'It is finished' encapsulates the completion of Jesus' redemptive work, indicating that all that is needed for salvation has been accomplished. As stated in John 19:30, this declaration confirms that Jesus fulfilled the entire will of God concerning our salvation. He did not leave any part of the task for us to complete; rather, His death put an end to the sacrificial system and the requirement of the law for redemption. Believers are assured that their salvation rests solely on Christ's finished work, and they can add nothing to it.