'Knoweth' in the Bible

And David sware moreover, and said, Thy father knoweth well that I have found favor in thine eyes; and he saith, Let not Jonathan know this, lest he be grieved: but truly as Jehovah liveth, and as thy soul liveth, there is but a step between me and death.

Have I to-day begun to inquire of God for him? be it far from me: let not the king impute anything unto his servant, nor to all the house of my father; for thy servant knoweth nothing of all this, less or more.

And he said unto him, Fear not; for the hand of Saul my father shall not find thee; and thou shalt be king over Israel, and I shall be next unto thee; and that also Saul my father knoweth.