'Agreement' in the Bible

There was nothing in the ark except the two tablets Moses had placed there in Horeb. (It was there that the Lord made an agreement with the Israelites after he brought them out of the land of Egypt.)

Don't you realize that the Lord God of Israel has given David and his dynasty lasting dominion over Israel by a formal agreement?

Now the messenger who went to summon Micaiah said to him, "Look, the prophets are in complete agreement that the king will succeed. Your words must agree with theirs; you must predict success!"