What shall we then say to these things? That is, though we live amidst temptations and afflictions in this life, we need not fear as long as we are faithful in the service of God, under his protection.
If God be for us, who is against us, or who shall hinder us from being saved. (Witham)
Paul was saying: “Let me hear no more about the dangers and evils which beset you on all sides. For even if some do not believe in the things to come, still they have not a word to say against the good things which have already taken place, e.g., God’s friendship toward you from the beginning, his justifying work, the glory which he gives, and so on.” The world is against us, but … in spite of itself it has become the source of endless blessing for us. So in reality nobody is against us! Homilies on Romans
