Yea, come unto Christ, and be perfected in Him, and deny yourselves of all ungodliness; and if ye shall deny yourselves of all ungodliness, and love God with all your might, mind and strength, then is His grace sufficient in you, that by His grace ye may be perfect in Christ; and if by the grace of God ye are perfect in Christ, ye can in nowise deny the power of God.
When we come unto Christ there will be four things that happen to us:
1. We will know that salvation and happiness will only come through Jesus Christ.
2. We will exercise faith to keep commitments and make covenants.
3. We will strive to become more like Christ.
4. and we will have our hearts changed.
Here is a great article about it: