No the Bible says you need to repent as well. Repentance is not mere profession of your lips. It's genuine sorrow and turning away from sin in your heart. If you repent you'll inevitably confess but just because you confess doesn't mean you necessarily have repented. All squares are rectangles but not all rectangles are squares.

"Repent, then, and turn to God, so that your sins may be wiped out, that times of refreshing may come from the Lord" -Acts 3:19

"I have declared to both Jews and Greeks that they must turn to God in repentance and have faith in our Lord Jesus." -Acts 20:21