John Trapp on Jeremiah 31:9

Ver. 9. They ſhall come with weeping] Prae gandio, inquit, flebunt, they ſhall weep for joy: having firſt ſoaked themſelves in godly ſorrow by the ſpirit of grace and of ſupplications (or deprecations) poured upon them, Zach. 12.10. being ſollicitous about their ſalvation.

And I will make them to walk by the rivers of waters] Heb. To the brooks of waters, i. e. to the holy ordinances, as Pſal. 23.3.

For I am a Father to Iſrael] I do all of free-grace.

Ephraim is my firſt-born] And therefore higher then the Kings of the earth, Pſal. 89.27.