A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown  at sacred-texts.com
jer 5:1THE CAUSE OF THE JUDGMENTS TO BE INFLICTED IS THE UNIVERSAL CORRUPTION OF THE PEOPLE. (Jer. 5:1-31)
a man--As the pious Josiah, Baruch, and Zephaniah lived in Jerusalem at that time, Jeremiah must here mean the mass of the people, the king, his counsellors, the false prophets, and the priests, as distinguished from the faithful few, whom God had openly separated from the reprobate people; among the latter not even one just person was to be found (Isa 9:16) [CALVIN]; the godly, moreover, were forbidden to intercede for them (Jer 7:16; compare Gen 18:23, &c.; Psa 12:1; Eze 22:30).
see . . . know--look . . . ascertain.
pardon it--rather, her.
jer 5:2(Tit 1:16).
swear falsely--not a judicial oath; but their profession of the worship of Jehovah is insincere (Jer 5:7; Jer 4:2). The reformation under Josiah was merely superficial in the case of the majority.
jer 5:3eyes upon the truth-- (Deu 32:4; Ch2 16:9). "Truth" is in contrast with "swear falsely" (Jer 5:2). The false-professing Jews could expect nothing but judgments from the God of truth.
stricken . . . not grieved-- (Jer 2:30; Isa 1:5; Isa 9:13).
refused . . . correction-- (Jer 7:28; Zep 3:2).
jer 5:4poor--rather, "the poor." He supposes for the moment that this utter depravity is confined to the uninstructed poor, and that he would find a different state of things in the higher ranks: but there he finds unbridled profligacy.
jer 5:5they have known--rather, "they must know." The prophet supposes it as probable, considering their position.
but these--I found the very reverse to be the case.
burst . . . bonds--set God's law at defiance (Psa 2:3).
jer 5:6lion . . . wolf . . . leopard--the strongest, the most ravenous, and the swiftest, respectively, of beasts: illustrating the formidable character of the Babylonians.
of the evenings--Others not so well translate, of the deserts. The plural means that it goes forth every evening to seek its prey (Psa 104:20; Hab 1:8; Zep 3:3).
leopard . . . watch . . . cities-- (Hos 13:7). It shall lie in wait about their cities.
jer 5:7It would not be consistent with God's holiness to let such wickedness pass unpunished.
sworn by-- (Jer 5:2; Jer 4:2); that is, worshipped.
no gods-- (Deu 32:21).
fed . . . to the full--so the Keri (Hebrew Margin) reads, God's bountifulness is contrasted with their apostasy (Deu 32:15). Prosperity, the gift of God, designed to lead men to Him, often produces the opposite effect. The Hebrew Chetib (text), reads: "I bound them (to Me) by oath," namely, in the marriage covenant, sealed at Sinai between God and Israel; in contrast to which stands their "adultery"; the antithesis favors this.
adultery . . . harlots' houses--spiritually: idolatry in temples of idols; but literal prostitution is also included, being frequently part of idol-worship: for example, in the worship of the Babylonian Mylitta.
jer 5:8in the morning-- (Isa 5:11). "Rising early in the morning" is a phrase for unceasing eagerness in any pursuit; such was the Jews' avidity after idol-worship. MAURER translates from a different Hebrew root, "continually wander to and fro," inflamed with lust (Jer 2:23). But English Version is simpler (compare Jer 13:27; Eze 22:11).
jer 5:9(Jer 5:29; Jer 9:9; Jer 44:22).
jer 5:10Abrupt apostrophe to the Babylonians, to take Jerusalem, but not to destroy the nation utterly (see on Jer 4:27).
battlements--rather, tendrils [MAURER]: the state being compared to a vine (Jer 12:10), the stem of which was to be spared, while the tendrils (the chief men) were to be removed.
jer 5:11(Jer 3:20).
It is not he--rather, "(Jehovah) is not HE," that is, the true and only God (Jer 14:22; Deu 32:39; Isa 43:10, Isa 43:13). By their idolatry they virtually denied Him. Or, referring to what follows, and to Jer 5:9, "(Jehovah) is not," namely, about to be the punisher of our sins (Jer 14:13; Isa 28:15).
jer 5:13Continuation of the unbelieving language of the Jews.
the prophets--who prophesy punishment coming on us.
the word--the Holy Spirit, who speaks through true prophets, is not in them [MAURER]. Or else, "There is no word (divine communication) in them" (Hos 1:2) [ROSENMULLER].
thus, &c.--Their ill-omened prophecies shall fall on themselves.
jer 5:14ye . . . thy . . . this people--He turns away from addressing the people to the prophet; implying that He puts them to a distance from Him, and only communicates with them through His prophet (Jer 5:19).
fire . . . wood--Thy denunciations of judgments shall be fulfilled and shall consume them as fire does wood. In Jer 23:29 it is the penetrating energy of fire which is the point of comparison.
jer 5:15(Jer 1:15; Jer 6:22). Alluding to Deu 28:49, &c.
Israel--that is, Judah.
mighty--from an Arabic root, "enduring." The fourfold repetition of "nation" heightens the force.
ancient--The Chaldeans came originally from the Carduchian and Armenian mountains north of Mesopotamia, whence they immigrated into Babylonia; like all mountaineers, they were brave and hardy (see on Isa 23:13).
language . . . knowest not-- Isa 36:11 shows that Aramaic was not understood by the "multitude," but only by the educated classes [MAURER]. HENDERSON refers it to the original language of the Babylonians, which, he thinks, they brought with them from their native hills, akin to the Persic, not to the Aramaic, or any other Semitic tongue, the parent of the modern Kurd.
jer 5:16open sepulchre--(Compare Psa 5:9). Their quiver is all-devouring, as the grave opened to receive the dead: as many as are the arrows, so many are the deaths.
jer 5:17(Lev 26:16).
jer 5:18Not even in those days of judgments, will God utterly exterminate His people.
I will not make a full end with you-- (Jer 5:10; Jer 4:27).
jer 5:19Retribution in kind. As ye have forsaken Me (Jer 2:13), so shall ye be forsaken by Me. As ye have served strange (foreign) gods in your land, so shall ye serve strangers (foreigners) in a land not yours. Compare the similar retribution in Deu 28:47-48.
jer 5:21eyes . . . ears, and--Translate, "and yet" (compare Deu 29:4; Isa 6:9). Having powers of perception, they did not use them: still they were responsible for the exercise of them.
jer 5:22sand--Though made up of particles easily shifting about, I render it sufficient to curb the violence of the sea. Such is your monstrous perversity, that the raging, senseless sea sooner obeys Me, than ye do who profess to be intelligent [CALVIN], (Job 26:10; Job 38:10-11; Pro 8:29; Rev 15:4).
jer 5:23(Jer 6:28).
jer 5:24rain . . . former . . . latter--The "former" falls from the middle of October to the beginning of December. The "latter," or spring rain in Palestine, falls before harvest in March and April, and is essential for ripening the crops (Deu 11:14; Joe 2:23).
weeks of . . . harvest--the seven weeks between passover and pentecost, beginning on the sixteenth of Nisan (Deu 16:9). By God's special providence no rain fell in Palestine during the harvest weeks, so that harvest work went on without interruption (see Gen 8:22).
jer 5:25National guilt had caused the suspension of these national mercies mentioned in Jer 5:24 (compare Jer 3:3).
jer 5:26(Pro 1:11, Pro 1:17-18; Hab 1:15).
as he that setteth snares--rather, "as fowlers crouch" [MAURER].
trap--literally, "destruction": the instrument of destruction.
catch men--not as Peter, to save (Luk 5:10), but to destroy men.
jer 5:27full of deceit--full of treasures got by deceit.
rich-- (Psa 73:12, Psa 73:18-20).
jer 5:28shine--the effect of fatness on the skin (Deu 32:15). They live a life of self-indulgence.
overpass . . . the wicked--exceed even the Gentiles in wickedness (Jer 2:33; Eze 5:6-7).
judge not . . . fatherless-- (Isa 1:23).
yet . . . prosper-- (Jer 12:1).
jer 5:29(Jer 5:9; Mal 3:5).
jer 5:30(Jer 23:14; Hos 6:10).
jer 5:31bear rule by their means--literally, "according to their hands," that is, under their guidance (Ch1 25:3). As a sample of the priests lending themselves to the deceits of the false prophets, to gain influence over the people, see Jer 29:24-32.
love to have it so-- (Mic 2:11).
end thereof--the fatal issue of this sinful course when divine judgments shall come.