Exodus 20:3-5 is the original commandment against other gods and idols, which Psalm 81:9 echoes as a covenant reminder.

Deuteronomy 6:14 repeats the same prohibition against going after other gods, reinforcing the covenant demand.

Deuteronomy 32:12 states that the LORD alone led Israel with no foreign god, illustrating the ideal of exclusive devotion.

Isaiah 43:12 uses the identical phrase 'no strange god among you' to declare God's unique saving acts.

1 Corinthians 8:6 affirms the one God for believers, directly reinforcing the exclusive worship commanded in Psalm 81:9.

Hosea 13:4 declares 'you shall know no god but me,' directly paralleling the command against foreign gods.

Malachi 2:11 condemns marrying the daughter of a foreign god, a specific violation of the command against foreign gods.

1 Corinthians 8:5 notes the existence of many 'gods' in the world, contrasting with the exclusive worship commanded here.