Rather, Surely “in vain from the hills” is the revelry of the mountains. The penitents contrast in it the uselessness of idol-worship with the salvation which Yahweh gives to His people.
Related Commentaries of Jeremiah 3:23
Jeremiah 3:23
23 Truly in vain is salvation hoped for from the hills, and from the multitude of mountains: truly in the LORD our God is the salvation of Israel.