Jeremiah 21 & 22 - Whether they hide in the mountains or in the valleys, they will be found. 2017

Jer 21:13
"Behold, I am against you, O valley dweller, O rocky plain," declares the LORD, "You men who say, 'Who will come down against us? Or who will enter into our habitations?'

Jer 21:14
"But I shall punish you according to the results of your deeds," declares the LORD, "And I shall kindle a fire in its forest That it may devour all its environs."'"

Whether they hide in the mountains or in the valleys, they will be found. Since many will try to hide in the forest, He will start a forest fire and either flush them out or judge them that way.