OK, now I’m REALLY confused. You mean when Jesus died and said “it is finished”, it was not? What more is there to do than is indicated in Romans 10:10:
Romans 10:10 (New International Version)
New International Version (NIV)
Copyright © 1973, 1978, 1984 by International Bible Society
For it is with your heart that you believe and are justified, and it is with your mouth that you confess and are saved.
The article addresses your question perfectly.