Let them be overthrown before thee; i.e. count them as those who have been brought to ruin. This explanation seems required by the parallelism, the companion clause meaning "do not regard their sin as cancelled." The ruin may be either spiritual or temporal; the parallelism favors the former (comp. Jeremiah 18:14; Hosea 14:1-9 :10, where "fall" should be "stumble"). Deal thus with them. "Thus" is interpolated by the Authorized Version; "deal" should rather be deal terribly ("deal" is constantly used in a pregnant sense; see on Jeremiah 14:7).
HOMILETICS