Summa Theologica, Part I · Aquinas Thomas
QUESTION 42
Reply Obj. 1: What is contained in creatures does not sufficiently represent what exists in God; so according to none of the modes enumerated by the Philosopher, are the Son and the Father in each other. The mode the most nearly approaching to the reality is to be found in that whereby something exists in its originating principle, except that the unity of essence between the principle and that which proceeds therefrom is wanting in things created. Reply Obj. 2: The Son's going forth from the Father is by mode of the interior procession whereby the word emerges from the heart and remains therein. Hence this going forth in God is only by the distinction of the relations, not by any kind of essential separation. Reply Obj. 3: The Father and the Son are relatively opposed, but not essentially; while, as above explained, one relative opposite is in the other. _______________________ SIXTH ARTICLE [I, Q. 42, Art. 6] Whether the Son Is Equal to the Father in Power? Objection 1: It would seem that the Son is not equal to the Father in power. For it is said (John 5:19): "The Son cannot do anything of Himself but what He seeth the Father doing." But the Father can act of Himself. Therefore the Father's power is greater than the Son's.
Obj. 2: Further, greater is the power of him who commands and teaches than of him who obeys and hears. But the Father commands the Son according to John 14:31: "As the Father gave Me commandment so do I." The Father also teaches the Son: "The Father loveth the Son, and showeth Him all things that Himself doth" (John 5:20). Also, the Son hears: "As I hear, so I judge" (John 5:30). Therefore the Father has greater power than the Son. Obj. 3: Further, it belongs to the Father's omnipotence to be able to beget a Son equal to Himself. For Augustine says (Contra Maxim. iii, 7), "Were He unable to beget one equal to Himself, where would be the omnipotence of God the Father?" But the Son cannot beget a Son, as proved above (Q. 41, A. 6). Therefore the Son cannot do all that belongs to the Father's omnipotence; and hence He is not equal to Him power. _On the contrary,_ It is said (John 5:19): "Whatsoever things the Father doth, these the Son also doth in like manner." _I answer that,_ The Son is necessarily equal to the Father in power. Power of action is a consequence of perfection in nature. In creatures, for instance, we see that the more perfect the nature, the greater power is there for action. Now it was shown above (A. 4) that the very notion of the divine paternity and filiation requires that the Son should be the Father's equal in greatness--that is, in perfection of nature. Hence it follows that the Son is equal to the Father in power; and the same applies to the Holy Ghost in relation to both.
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