Jeremiah 3:8 - Matthew Poole's English Annotations on the Holy Bible

I saw: q.d. That which others discern not I saw well enough, viz. both her hypocrisy and dissimulation, and her incorrigibleness notwithstanding what had befallen Israel, whose correction should have been her instruction; thus God speaks of the notice he took of both, Jeremiah 23:13,14. Israel is said to be backsliding, but Judah treacherous, because she retained the worship of God, though she did often privately and closely embrace idols. and sometimes publicly, under Manasseh, and Ahaz, and other wicked kings: When for all the causes; or notwithstanding all the ground and reason I had to deal so with Israel in regard of her adulteries, as to put her away. Given her a bill of divorce; delivered her up into the hands of the Assyrian, where God took from her the title of being his church, 2 Kings 17:5,6, &c., which he calls here a bill of divorce; not such a one as the Jews were allowed to give upon every slight ground, (for such a one God denies that ever he gave them, and challengeth them to produce it, Isaiah 1:1) but upon just and great occasion, viz. her playing the adulteress against him in her idolatries. Feared not, i.e. was neither afraid of giving me offence, nor of the like punishment. But went and played the harlot also; although she had seen the judgment of God executed upon Israel before her eyes, which made it the more stupendous, that she would take no warning by her sister's sufferings, Proverbs 28:14, yet she went on still, Ezekiel 23:11,12, &c.