Jeremiah 3:6

3:6 When Josiah was king of Judah, the Lord said to me, “Jeremiah, you have no doubt seen what wayward Israel has done. You have seen how she went up to every high hill and under every green tree to give herself like a prostitute to other gods.

Jeremiah 3:13

3:13 However, you must confess that you have done wrong,

and that you have rebelled against the Lord your God.

You must confess that you have given yourself to foreign gods under every green tree,

and have not obeyed my commands,’ says the Lord.