He who sins is of the devil, for the devil has been sinning from the beginning. To this end the Son of God was revealed, that he might destroy the works of the devil.
I love that verse. Behold, what manner of love God has bestowed upon you, that you should be called the son of God. What glorious love, that God should adopt me as His son, that God should claim me as His son. That God should call me His son. What manner of love God has for me that He would call me His son.