Jamieson, Fausset and Brown on Jeremiah 23:10

10. adulterers--spiritual, that is, forsakers of God, Israel's true Husband (Is 54:5) for idols, at the instigation of the false "prophets" (Jr 23:9, 15). Literal adultery and fornication, the usual concomitants of idolatry, are also meant.

swearing--Maurer, &c., translate, "Because of the curse (of God on it), the land mourneth" (De 27:15-26; 28:15-68; Is 24:6). More than usual notoriety had been given to the curses of the law, by the finding and reading of it in Josiah's time (2Ki 22:11, &c.). But Ho 4:2, 3, favors English Version (compare Jr 12:4). A drought was sent by God on the pastures ("pleasant places," oases) in the desert, on account of the "profaneness" of the priests, prophets, and people (Jr 23:11).

course ... evil--They (both prophets and people) rush into wickedness (Jr 23:21; Is 59:7).

force ... not right--Their powers are used not on the side of rectitude, but on that of falsehood.