'Kept' in the Bible

So death came to Saul because of the sin which he did against the Lord, that is, because of the word of the Lord which he kept not; and because he went for directions to one who had an evil spirit,

And he took up his position in the middle of the bit of land, and kept back their attack, and overcame the Philistines; and the Lord gave a great salvation.

He has kept his agreement in mind for ever, the word which he gave for a thousand generations;

He would not let anyone do them wrong; he even kept back kings because of them,