St. John Chrysostom ca. 349-407
Wherefore it is necessary to understand the marvel of the Mysteries, what it is, why it was given, and what is the profit of the action. We become one Body, and members of His flesh and of His bones.
Ephesians 5:30 Let the initiated follow what I say. In order then that we may become this not by love only, but in very deed, let us be blended into that flesh. This is effected by the food which He has freely given us, desiring to show the love which He has for us. On this account He has mixed up Himself with us; He has kneaded up His body with ours, that we might be a certain One Thing, like a body joined to a head. For this belongs to them who love strongly; this, for instance, Job implied, speaking of his servants, by whom he was beloved so exceedingly, that they desired to cleave unto his flesh. For they said, to show the strong love which they felt, Who would give us to be satisfied with his flesh?
Job 31:31 Wherefore this also Christ has done, to lead us to a closer friendship, and to show His love for us; He has given to those who desire Him not only to see Him, but even to touch, and eat Him, and fix their teeth in His flesh, and to embrace Him, and satisfy all their love. Let us then return from that table like lions breathing fire, having become terrible to the devil; thinking on our Head, and on the love which He has shown for us. (Homily 46 On the Gospel of John, 3)
Beloved, see how we are honored! Yet some are so unreasonable and so ungrateful as to say, Why are we endowed with free will?
But how in all the particulars which we have mentioned could we have imitated God, if there had been no free will? I rule Angels, He says, and so do you, through Him who is the First-fruits. 1 Cor. 15:23 I sit on a royal throne, and you are seated with Me in Him who is the First-fruits. As it is said, He has raised us up together and made us sit together in heavenly places in Christ Jesus.
Eph. 2:6 Through Him who is the First-fruits, Cherubim and Seraphim adore you, with all the heavenly host, principalities and powers, thrones and dominions. Disparage not your body, to which such high honors appertain, that the unbodied Powers tremble at it.
But what shall I say? It is not in this way only that I have shown My love to you, but by what I have suffered. For you I was spit upon, I was scourged. I emptied myself of glory, I left My Father and came to you, who dost hate Me, and turn from Me, and art loath to hear My Name. I pursued you, I ran after you, that I might overtake you. I united and joined you to myself, eat Me, drink Me,
I said. Above I hold you, and below I embrace you. Is it not enough for you that I have your First-fruits above? Does not this satisfy your affection? I descended below: I not only am mingled with you, I am entwined in you. I am masticated, broken into minute particles, that the interspersion, and commixture, and union may be more complete. Things united remain yet in their own limits, but I am interwoven with you. I would have no more any division between us. I will that we both be one. (Homily 15 On 1st Timothy)