11 Bible Verses about Forbidden Alliances

You shall make no covenant with them, nor with their gods. They shall not dwell in your land, lest they make you sin against me: for if you serve their gods, it will surely be a snare unto you.

Take heed to yourself, lest you make a covenant with the inhabitants of the land where you go, lest it be for a snare in the midst of you: But you shall destroy their altars, break their images, and cut down their idol poles: For you shall worship no other god: for the LORD, whose name is Jealous, is a jealous God:read more.
Lest you make a covenant with the inhabitants of the land, and they go play the harlot after their gods, and do sacrifice unto their gods, and one call you, and you eat of his sacrifice;

And when the LORD your God shall deliver them over to you; you shall strike them, and utterly destroy them; you shall make no covenant with them, nor show mercy unto them:

And you shall make no covenant with the inhabitants of this land; you shall throw down their altars: but you have not obeyed my voice: why have you done this?

And Jehu the son of Hanani the seer went out to meet him, and said to king Jehoshaphat, Should you help the wicked, and love them that hate the LORD? therefore is wrath came upon you from the LORD.

Then Eliezer the son of Dodavahu of Mareshah prophesied against Jehoshaphat, saying, Because you have joined yourself with Ahaziah, the LORD has broken your works. And the ships were broken, that they were not able to go to Tarshish.

For the LORD spoke thus to me with a strong hand, and instructed me that I should not walk in the way of this people, saying, Say not, A conspiracy, to all them to whom this people shall say, A conspiracy; neither fear you their threats, nor be afraid.

That walk to go down into Egypt, and have not asked my counsel; to strengthen themselves in the strength of Pharaoh, and to trust in the shadow of Egypt!

Woe to them that go down to Egypt for help; and rely on horses, and trust in chariots, because they are many; and in horsemen, because they are very strong; but they look not unto the Holy One of Israel, neither seek the LORD!

Ephraim is joined to idols: let him alone.

Ephraim feeds on wind, and follows after the east wind: he daily increases lies and desolation; and they do make a covenant with the Assyrians, and oil is carried into Egypt.