Matthew Poole and continuators on Jeremiah 31:2

2 Thus saith the LORD, The people which were left of the sword, found grace in the wilderness; even Israel, when I went to cause him to rest .

God confirmeth the afore-mentioned promises and his peoples hope, and faith in them, by minding them of what he had anciently done for this very people, though God did in the Journey which the Israelites had from Egypt to Canaan, cut off many of them by the Sword for their iniquities, some by the Amalekites, Exod. 17.8. some by the swords of their Brethren for the Idolatry they committed about the Golden Calf, Exod. 32.28. yet, those that survived that, and other Judgments found favour in Gods eyes, while they were going to Canaan the Land of Rest, or while God going before them, brought them into Canaan. God paralleleth his future Providences, and gracious purposes with his past gracious Providences.