'Keepeth' in the Bible

He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him;

but whoso keepeth his word, in him verily hath the love of God been perfected. Hereby we know that we are in him:

And he that keepeth his commandments abideth in him, and he in him. And hereby we know that he abideth in us, by the Spirit which he gave us.

We know that whosoever is begotten of God sinneth not; but he that was begotten of God keepeth himself, and the evil one toucheth him not.