John Trapp on Nehemiah 9:31

Verſe 31. Nevertheleſſe for thy great mercies ſake] Mans perverſneſſe cannot interrupt the courſe of Gods goodneſſe. In the middeſt of judgement, he remembreth mercy, which beareth the ſame proportion to his judgement, which ſeven (a compleat number) hath to an Ʋnity.

Thou diddeſt not utterly conſume them] God will repent for his people, when he ſeeth their power is gone, Deut. 32.36. and be jealous with a great jealouſie, when the enemy goes beyond his commiſſion, Zach. 1.14, 15.

For thou art a gracious and merciful God] And this is moſt ſeene, when miſery weighs down, and nothing but mercy turneth the ſcale.