The term “grace” refers to unmerited gifts of God, among which might be gifts of knowledge. Does God offer knowledge over and above what we could have learned just through the still earlier gift of our inbuilt reasoning powers? At stake is the authenticity of the deeds, and the truth of the teachings, recorded in Holy Scripture. Thomas Aquinas always takes natural reason as far as he can before turning to what God has revealed by grace; he wants us to trust Revelation, but only authentic Revelation. Now, though, he turns the inquiry around. In order to know all that we need to know about God, do we need His grace at all? This inquiry amplifies the one in Question 1, Article 1.