Jeremiah 4:2

2 And thou shalt swear, The Lord liveth, in truth, and in doom, and in rightfulness; and all folks shall bless him, and shall praise him. (And if thou shalt swear, As the Lord liveth, in truth, and in judgement, and in righteousness/in truth, and in justice, and in uprightness; then all the nations shall ask me to bless them like you, and they shall praise me.)

Jeremiah 4:2 Meaning and Commentary

Jeremiah 4:2

And thou shalt swear, the Lord liveth
Or by the living Lord, by him and him only; not by the creatures, but by the God of truth. This is sometimes put for the whole worship and service of God, ( Deuteronomy 6:13 ) and for a confession of Christ, and profession of faith in him, ( Isaiah 45:23 ) , compared with ( Romans 14:11 ) and which ought to be done, in truth, in righteousness, and in judgment;
in sincerity, integrity, and uprightness of soul; in spirit and in, truth; in righteousness and true holiness: and the nations shall bless themselves in him,
not in Israel, as the Targum, Jarchi, and Kimchi, interpret it; but in the Lord, even in the Messiah, the Lord Jesus Christ, in whom all the nations of the earth were to be blessed with all spiritual blessings; with which being blessed, they call and count themselves happy, being pardoned through the blood of Christ, justified by his righteousness, and having peace, life, and salvation by him, ( Genesis 22:18 ) : and in him shall they glory;
not in themselves, nor in any creature, or creature enjoyment; but in the Lord, and in what he is to them, wisdom, righteousness, sanctification, and redemption; in whom all the seed of Israel, being justified, glory; see ( 1 Corinthians 1:30 1 Corinthians 1:31 ) ( Isaiah 45:25 ) . The sense of the words seems to be, that upon the Gospel being preached by Christ and his apostles to the Israelites, and some of them being converted, and their abominations put away, and they cleaving to the Lord, and to his worship; the Gentiles should have the Gospel sent to them, and receive it, and place all their blessedness in Christ, and glory in him.

Jeremiah 4:2 In-Context

1 Israel, if thou turnest again, saith the Lord, turn thou (again) to me; if thou takest away thine offendings from my face, thou shalt not be moved. (Israel, if thou shalt return to me, saith the Lord, then return thou to me; if thou takest away thy offences from before my face, then thou shalt not be shaken out.)

2 And thou shalt swear, The Lord liveth, in truth, and in doom, and in rightfulness; and all folks shall bless him, and shall praise him. (And if thou shalt swear, As the Lord liveth, in truth, and in judgement, and in righteousness/in truth, and in justice, and in uprightness; then all the nations shall ask me to bless them like you, and they shall praise me.)

3 For the Lord God saith these things to a man of Judah, and to a dweller of Jerusalem (and to an inhabitant of Jerusalem), Make ye new to you a land tilled of new, either a fallow (land), and do not ye sow on thorns.

4 Men of Judah, and dwellers of Jerusalem, be ye circumcised to the Lord, and do ye away the prepuces, either filths, of your hearts; lest peradventure mine indignation go out as fire, and be kindled, and none there be that quench, for the malice of your thoughts. (People of Judah, and inhabitants of Jerusalem, be ye circumcised to the service of the Lord, and do ye away the prepuces, or the filths, of your hearts; lest perhaps my indignation go out like fire, and be kindled, and there be no one who can quench it, for the malice of your thoughts.)

5 Tell ye in Judah, and make ye heard in Jerusalem; speak ye, and sing ye with a trump in the land; cry ye strongly, and say ye, Be ye gathered together, and enter we into [the] strong cities.