'Tablets' 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.)

So the king summoned Jehoiada the chief priest, and said to him, "Why have you not made the Levites collect from Judah and Jerusalem the tax authorized by Moses the Lord's servant and by the assembly of Israel at the tent containing the tablets of the law?"