Joshua 23:11-13

11Take great heed therefore unto your souls, that ye love Jehovah your 1God.

12For if ye in any wise go back, and cleave unto the residue of these nations, these that remain among you, and make marriages with them, and come in unto them and they unto you:

13know for a certainty that Jehovah your 2God will no more dispossess these nations from before you, and they shall be snares and traps unto you, and scourges in your sides, and thorns in your eyes, until ye perish from off this good land which Jehovah your 3God hath given you.