Epistles of Ignatius
Book I · Chapter 5: Refuting the Errors Mentioned Earlier
And that He Himself is not God over all and the Father, but His Son, He shows when He says, “I ascend to my Father and your Father, and to my God and your God.” And again, “When all things are subdued to Him, then He Himself will also be subject to Him who put all things under Him, that God may be all in all.” Therefore, it is one Person who put all things under, and who is all in all, and another Person to whom they were subdued, who also Himself, along with all other things, becomes subject to the first.