Jeremiah 3:21
“A voice was heard upon the high places, weeping and supplications of the children of Israel: for they have perverted their way, and they have forgotten the Lord their God.”
But I said, How shall I put thee among the children, and give thee a pleasant land, a goodly heritage of the hosts of nations? and I said, Thou shalt call me, My father; and shalt not turn away from me.
Surely as a wife treacherously departeth from her husband, so have ye dealt treacherously with me, O house of Israel, saith the Lord.
A voice was heard upon the high places, weeping and supplications of the children of Israel: for they have perverted their way, and they have forgotten the Lord their God.
Return, ye backsliding children, and I will heal your backslidings. Behold, we come unto thee; for thou art the Lord our God.
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.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“The wicked shall be turned into hell, and all the nations that forget God.”
“And of whom hast thou been afraid or feared, that thou hast lied, and hast not remembered me, nor laid it to thy heart? have not I held my peace even of old, and thou fearest me not?”
“Can a maid forget her ornaments, or a bride her attire? yet my people have forgotten me days without number.”
“Lift up thine eyes unto the high places, and see where thou hast not been lien with. In the ways hast thou sat for them, as the Arabian in the wilderness; and thou hast polluted the land with thy whoredoms and with thy wickedness.”
“He is gone up to Bajith, and to Dibon, the high places, to weep: Moab shall howl over Nebo, and over Medeba: on all their heads shall be baldness, and every beard cut off.”