Adam Clarke on Jeremiah 2:21

I had planted thee a noble vine - I gave thee the fullest instruction, the purest ordinances, the highest privileges; and reason would that I should expect thee to live suitably to such advantages; but instead of this thou art become degenerate; the tree is deteriorated, and the fruit is bad. Instead of being true worshippers, and of a holy life and conversation, ye are become idolaters of the most corrupt and profligate kind. See Isa 5:1, etc., where the same image is used.