And the Lord was with Judah
 Encouraging, strengthening, succeeding, and giving the tribe victory over the Canaanites; the Targum is, 
``the Word of the Lord was for the help of the house of Judah:''and he drove out [the inhabitants of] the mountains;
 but could not drive out the inhabitants of the valley;
 God forsaking them, because they were afraid of them, for a reason after mentioned, or through slothfulness, and being weary of fighting, or because they fell into some sins, which occasioned the divine displeasure; so the Targum, 
``after they had sinned, they could not drive out the inhabitants of the valley:''because they had chariots of iron;