Exodus 32:16

32:16 Now the tablets were the work of God, and the writing was the writing of God, engraved on the tablets.

Exodus 34:14

34:14 For you must not worship any other god, for the Lord, whose name is Jealous, is a jealous God.

Exodus 34:23

34:23 At three times in the year all your men must appear before the Lord God, the God of Israel.