“You shall not add to the word which I command you, neither shall you take away from it, that you may keep the commandments of Yahweh your God which I command you.”
Deuteronomy 4:2 (WEB)
Context Reading
1Now, Israel, listen to the statutes and to the ordinances which I teach you, to do them, that you may live and go in and possess the land which Yahweh, the God of your fathers, gives you. 2You shall not add to the word which I command you, neither shall you take away from it, that you may keep the commandments of Yahweh your God which I command you. 3Your eyes have seen what Yahweh did because of Baal Peor; for Yahweh your God has destroyed all the men who followed Baal Peor from among you. 4But you who were faithful to Yahweh your God are all alive today.