John Gill Commentary Jeremiah 46:28

"Fear not thou, O Jacob my servant, saith Jehovah; for I am with thee: for I will make a full end of all the nations whither I have driven thee; but I will not make a full end of thee, but I will correct thee in measure, and will in no wise leave thee unpunished." — Jeremiah 46:28 (ASV)

Fear not, O Jacob, my servant, says the Lord, for I [am] with you Though afar off, in foreign lands, and in captivity: this exhortation is repeated, to strengthen their consolation, and them, against their fears of being cast off by the Lord: for I will make a full end of all the nations where I have driven you ; the Babylonians and Chaldeans are no more: but I will not make a full end of you ; the Jews to this day remain a people, and distinct from others, though scattered about in the world: but correct you in measure ; with judgment, and in mercy: yet will I not leave you wholly unpunished ; (See Gill on Jeremiah 30:11).