Jeremiah’s lonely cry: I sat alone, my pain is perpetual

Jeremiah 15:17-18

I sat not in the assembly of the mockers, nor rejoiced; I sat alone because of thy hand: for thou hast filled me with indignation. Why is my pain perpetual, and my wound incurable, which refuseth to be healed? wilt thou be altogether unto me as a liar, and as waters that fail?