One does what they truly believe and love. Period.
If we truly have repented, We are converted and will believe God. We live His Word by faith. Faith and works—faith shows up and out in the life and is revealed. The choices that we make in our living (our doing) whether by the Word of God, or not: Reveals if we are children of the Light; or children of darkness.
“Jesus cried and said, He that believeth on me, believeth not on me, but on him that sent me. And he that seeth me seeth him that sent me.
I am come a light into the world, that whosoever believeth on me should not abide in darkness. And if any man hear my words, and believe not, I judge him not: for I came not to judge the world, but to save the world.
He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day. For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak.
And I know that his commandment is life everlasting: whatsoever I speak therefore, even as the Father said unto me, so I speak.”
John 12:44-50 KJV