Athanasius of Alexandria

If they shall assign the toil of making all things as the reason why God only made the Son, the whole creation will cry out against them as saying unworthy things of God; and Isaiah, too, who has said in Scripture, "The everlasting God, the Lord, the Creator of the ends of the earth, does not faint, neither is he weary: there is no searching of his understanding." And if God made the Son alone, as not lowering himself to make the rest but committed them to the Son as an assistant, this on the other hand is unworthy of God, for in him …

Discourses Against the Arians 2.17.25 ↗

Thomas Aquinas

He sets out the reproof of the error; and first, the confirmation of the proof from the law: know you not, from the natural law, or have you not heard, from the written law, these things which follow? He sets out the reproof, first, showing the greatness of God from the things which he has in himself, namely, the eternity of his dominion: everlasting God; the Lord shall reign for ever and ever (Exod 15:18); unfailing power: he shall not faint, that he could not do all things, nor labor, that he could do them with difficulty: his …

Commentary on Isaiah ↗