That God's power is His substance
Active power belongs to the perfection of a thing. But every divine perfection is contained in God's own being (B. I, Chap. XXVIII). God's power therefore is not different from his being. But God is His own being (B. I, Chap. XXII); He is therefore His own power.
- In things the powers of which are not their substance, the said powers are accidents. But there can be no accident in God (B. I, Chap. XXIII), who is therefore his own power.