John Chrysostom : "For we have been made partakers of Christ." What is this, "We have been made partakers of Christ"? We partake of Him (he means); we were made One, we and He - since He is the Head and we the body, "fellow-heirs and of the same body; we are one body, of His flesh and of His bones." "If we hold fast the beginning of our confidence [or, the principle of our subsistence] steadfast unto the end." What is "the principle of our subsistence"? The faith by which we stand, and have been brought into being and were made to exist, as one may say. — Homily on Hebrews 6 John Chrysostom : Then he suggests hopes to them, saying, "We are made partakers of Christ"; All but saying, He that so loved us, He that counted us worthy of so great things, as to make us His Body, will not suffer us to perish. Let us consider (he says) of what we have been thought worthy: we and Christ are One: let us not then distrust Him. And again, he hints at that which had been said in another place, that "If we suffer, we shall also reign with Him." For this is implied in "We are made partakers," we partake of the same things whereof Christ also partakes. He urges them on from the good things; "for we are," he says, "partakers of Christ." — Homily on Hebrews 6 Oecumenius : "For we have become partakers of Christ." One, he says, we have become partakers with Christ, since He has deemed it worthy to be our head and to make us His members. "if we hold the beginning of our confidence." The beginning of confidence is faith towards Christ. For by it we have endured and have become partakers of Christ. "to the end." The 'to the end' clearly indicates that they had begun. — The Pseudo-Oecumenian Catena on Hebrews Theodore of Mopsuestia : He says that those who have believed and shared in the Spirit have become partakers in Christ's "hypostasis" in that they have received a certain natural communion with him. Now there remains the task of preserving this foundation with a pure resolve. — COMMENTARY ON Hebrews 3.12-13 Theodoret of Cyrus : We shared in death with Christ the Lord through all-holy baptism, and after being buried with him we prefigured the resurrection, provided of course we kept faith firm. He referred to this by the phrase "first confidence." Through it we were renewed, we were joined to Christ the Lord, and we shared the grace of the all-holy Spirit. — INTERPRETATION OF Hebrews 3