Romans 8:31

The apostle closes this excellent discourse upon the privileges of believers with a holy triumph, in the name of all the saints. Having largely set forth the mystery of God's love to us in Christ, and the exceedingly great and precious privileges we enjoy by him, he concludes like an orator: What shall we then say to these things? What use shall we make of all that has been said? He speaks as one amazed and swallowed up with the contemplation and admiration of it, wondering at the height and depth, and length and breadth, of the love of Christ, which passeth knowledge. The more we know of other things the less we wonder at them; but the further we are led into an acquaintance with gospel mysteries the more we are affected with the admiration of them. If Paul was at a loss what to say to these things, no marvel if we be. And what does he say? Why, if ever Paul rode in a triumphant chariot on this side of heaven, here it was: with such a holy height and bravery of spirit, with such a fluency and copiousness of expression, does he here comfort himself and all the people of God, upon the consideration of these privileges.

— Matthew Henry's Concise Commentary (public domain)

What shall we then say to these things?--"We can no farther go, think, wish" [BENGEL]. This whole passage, to Rom 8:34, and even to the end of the chapter, strikes all thoughtful interpreters and readers, as transcending almost every thing in language, while OLSHAUSEN notices the "profound and colossal" character of the thought. If God be for us, who can be against us?--If God be resolved and engaged to bring us through, all our enemies must be His; and "Who would set the briers and thorns against Him in battle? He would go through them. He would burn them together" (Isa 27:4). What strong consolation is here! Nay, but the great Pledge of all has already been given; for,

— Jamieson-Fausset-Brown Commentary (public domain)