They had reached that stage in which men sin without any sense of guilt (see 1 John 5:16).
Neither make intercession to me - In Jeremiah 14:7-9 we have an intercessory prayer offered by Jeremiah, but not heard. The intercession of Moses prevailed with God Numbers 11:2; Numbers 14:13-20; Numbers 16:22, because the progress of the people then wins upward; the progress now was from bad to worse, and therefore in Jeremiah 15:1 we read that the intercession even of Moses and Samuel (see 1 Samuel 12:23) would profit nothing.