Joshua 23:12-13

12“But if you turn away and ally yourselves with the survivors of these nations that remain among you and if you intermarry with them and associate with them,

13then you may be sure that the Lord your God will no longer drive out these nations before you. Instead, they will become snares and traps for you, whips on your backs and thorns in your eyes, until you perish from this good land, which the Lord your God has given you.