Therefore the showers have been withholden, viz. by me, according to my threatening, Leviticus 26:19 Deuteronomy 28:23,24, i.e. a drought sent upon thee, either as a punishment of thy wickedness; thus public sins bring public judgments; or as an aggravation of it; and then it must be read though, as it often is; q. d. notwithstanding the great drought; and this the last words of the verse seem to favour. There hath been no latter rain: this, added to showers before mentioned, seems to imply there had been no former nor latter rain, the former for the springing of the corn, the latter for the plumping and ripening it; this coming a little before harvest. Thou hadst a whore's forehead: for all this, thou didst still remain impudent and obstinate, as ashamed of nothing, Jeremiah 6:15; thus proverbially expressed, because shame doth first and mostly appear in the forehead. Thus antichrist's impudence is expressed, Revelation 17:5. And some ancient heretics were called effrontes.
Related Commentaries of Jeremiah 3:3
Jeremiah 3:3
3 Therefore the showers have been withholden, and there hath been no latter rain; and thou hadst a whore's forehead, thou refusedst to be ashamed.