John Chrysostom

Observe, he applies the word "through" to the Father. But what then? Shall we say that He is inferior? Surely not.

Observe that he calls saints, men with wives, and children, and domestics. For that these are they whom he calls by this name is plain from the end of the Epistle, as, when he says, "Wives, be in subjection unto your own husbands." And again, "Children, obey your parents:" and, "Servants, be obedient to your masters." Think how great is the indolence that possesses us now, how rare is any thing like virtue now and how great the abundance of virtuous men must have been then, when even secular men could be called "saints and faithful." "Grace" is his word; and he calls God, "Father," since this name is a sure token of that gift of grace. And how so? Hear what he saith elsewhere; "Because ye are sons, God sent forth the Spirit of His Son into our hearts, crying, Abba, Father."

Because for us men Christ was born, and appeared in the flesh.