Deuteronomy 6:13

6:13 You must revere the Lord your God, serve him, and take oaths using only his name.

Deuteronomy 10:20

10:20 Revere the Lord your God, serve him, be loyal to him and take oaths only in his name.

Deuteronomy 30:4

30:4 Even if your exiles are in the most distant land, from there the Lord your God will gather you and bring you back.