15. Were they ashamed? “They” refers to the impudent spiritual leaders. If they had been ashamed of their monstrous wickedness, there would have been hope. But they were utterly callous, “past feeling” (Eph. 4:19), beyond the reach of the Holy Spirit.
Blush. Compare 3:3; 8:12. Shamelessness is indicative of a seared conscience.
Visit. Here with the meaning “to punish” (see on 6).
I remember thee. Literally, “I remember for thee,” in thy favor, or to thy credit (see Neh. 5:19, where “think upon me,” is literally, “remember for me”).