Romans 10:9-10 KJV That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.  For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation. No repentance is required. However, repentance does play a part. Romans 2:4 KJV Or despisest thou the riches of his goodness and forbearance and longsuffering; not knowing that the goodness of God leadeth thee to repentance? Therefore, when you are convicted of your sin, and are aware of what God did for you, you will repent. But you are already saved if you believe in your heart that God rose Jesus from the grave, and if you confess the Lord Jesus (not exactly sure what that means). Also, please remember the thief on the cross. He did not repent. Paul didn't either, but I'm sure that he did at some later time.