Judges 2:21

I will not henceforth drive out - As a people, they never had personal courage, discipline, or hardihood, sufficient to stand before their enemies: the advantages they gained were by the peculiar interference of God. This they had while obedient; when they ceased to obey, his strong arm was no longer stretched out in their behalf; therefore their enemies continued to possess the land which God purposed to give them as their inheritance for ever.