'Longer' in the Bible

The Lord’s anger burned against Israel, and He handed them over to marauders who raided them. He sold them to the enemies around them, and they could no longer resist their enemies.

I will no longer drive out before them any of the nations Joshua left when he died.

So Midian was subdued before the Israelites, and they were no longer a threat. The land was peaceful 40 years during the days of Gideon.