Jamieson, Fausset & Brown, on Jer 8:6

“I attended, and hearkened; no man speaketh what is good, there is none that doth penance for his sin, saying: What have I done? They are all turned to their own course, as a horse rushing to the battle.”

“spake not aright--that is, not so as penitently to confess that they acted wrong. Compare what follows. every one . . . his course--The Keri reads "course," but the Chetib, "courses." "They persevere in the courses whatever they have once entered on." Their wicked ways were diversified. horse rusheth--literally, "pours himself forth," as water that has burst its embankment. The mad rapidity of the war horse is the point of comparison (Job 39:19-25).”

Imported from an open dataset — not yet checked against the printed edition.