Jeremiah 32:27 - Ellicott's Commentary On The Whole Bible

Is there any thing too hard for me? — The answer to the prayer is an echo of the prayer itself (Jeremiah 32:17). The prophet is assured that he was not wrong when he cast himself, in the full confidence of faith, on the loving omnipotence of God. The words which he had used were more than a liturgical formula to one who had that confidence.