The warning

12For if you indeed turn back and cling to the remnant of these nations, these that remain with you, and intermarry with them and go in to them, and they to you,

13know for certain that Yahweh your God will no longer drive out these nations from before you, but they will become for you a trap and a snare, a scourge on your sides and thorns in your eyes, until you perish from off this good land that Yahweh your God has given you.