Verse 21.— And this commandment have we from him. Besides, we all have God's will, expressed in a command given by him, that every one who loves God must love his brother also. This is the end of the matter. No command can be obeyed in part. A rejection of a part is the rejection of the whole, and is at the same time a rejection of the authority of the law-giver, and subjects the offender to his displeasure.