Nehemiah 1:9 - Joseph Benson’s Commentary on the Old and New Testaments

But if ye turn unto me, I will gather them from thence, &c. This promise made by Moses he trusted God would fulfil, as he had the threatening. It is to be observed, that Nehemiah was directed in this prayer to God, and in his efforts for the restoration of Jerusalem, by the predictions of Moses, Deuteronomy 30:1-4. And he plainly found the truth of that prophecy in the readiness of the king of Persia to grant his petition, which, no doubt, confirmed his faith in what Moses there declares.