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 13:4

13:4 You must follow the Lord your God and revere only him; and you must observe his commandments, obey him, serve him, and remain loyal to him.

Matthew 4:10

4:10 Then Jesus said to him, “Go away, Satan! For it is written: ‘You are to worship the Lord your God and serve only him.’”

Matthew 6:24

6:24 “No one can serve two masters, for either he will hate the one and love the other, or he will be devoted to the one and despise the other. You cannot serve God and money.

Luke 4:8

4:8 Jesus answered him, “It is written, ‘You are to worship the Lord your God and serve only him.’”