Adam Clarke on Jeremiah 2:31

Have I been a wilderness unto Israel? - Have I ever withheld from you any of the blessings necessary for your support?

A land of darkness - Have you, since you passed through the wilderness, and came out of the darkness of Egypt, ever been brought into similar circumstances? You have had food and all the necessaries of life for your bodies; and my ordinances and word to enlighten and cheer your souls. I have neither been a wilderness nor a land of darkness to you.

We are lords - We wish to be our own masters; we will neither brook religious nor civil restraint; we will regard no laws, human or Divine. It was this disposition that caused them to fall in so fully with the whole system of idolatry.