Christian Movie Clip "The Gospel Messenger" (1) - Was the Work of Salvation Completed When the Lord Was Crucified?

Christian Movie Clip "The Gospel Messenger" (1) - Was the Work of Salvation Completed When the Lord Was Crucified? 

Many people in the religious world think: "The Lord Jesus saying on the cross 'It is finished' proves that God's work of saving mankind was finished. Simply by believing in the Lord, we are forgiven of sin, justified by faith, and saved by grace. When the Lord comes, He will bring us up into the kingdom of heaven. He can't possibly do any more work of salvation." Is this view in line with the facts of God's work?