Texts explained; Fifthly, Acts 2:36. The Regula Fidei must be observed; madeapplies to our Lord's manhood; and to His manifestation; and to His office relative to us; and is relative to the Jews. Parallel instance in Genesis 27:29, 37. The context contradicts the Arianinterpretation
14 For the Son of God indeed, being Himself the Word, is Lord of all; but we once were subject from the first to the slavery of corruption and the curse of the Law, then by degrees fashioning for ourselves things that were not, we served, as says the blessed Apostle, 'them which by nature are no Gods,' and, ignorant of the true God, we preferred things that were not to the truth; but afterwards, as the ancient people when oppressed in Egypt groaned, so, when we too had the Law 'engrafted ' in us, and according to the unutterable sighings of the Spirit made our intercession, 'O Lord our God, take possession of us,' then, as 'He became for a house of refuge' and a 'God and defence,' so also He became our Lord. Nor did He then begin to be, but we began to have Him for our Lord. For upon this, God being good and Father of the Lord, in pity, and desiring to be known by all, makes His own Son put on Him a human body and become man, and be called Jesus, that in this body offering Himself for all, He might deliver all from false worship and corruption, and might Himself become of all Lord and King. His becoming therefore in this way Lord and King, this it is that Peter means by, 'He has made Him Lord,' and 'has sent Christ.' as much as to say, that the Father in making Him man (for to be made belongs to man), did not simply make Him man, but has made Him in order to His being Lord of all men, and to His hallowing all through the Anointing. For though the Word existing in the form of God took a servant's form, yet the assumption of the flesh did not make a servant of the Word, who was by nature Lord; but rather, not only was it that emancipation of all humanity which takes place by the Word, but that very Word who was by nature Lord, and was then made man, has by means of a servant's form been made Lord of all and Christ, that is, in order to hallow all by the Spirit. And as God, when 'becoming a God and defence,' and saying, 'I will be a God to them,' does not then become God more than before, nor then begins to become God, but, what He ever is, that He then becomes to those who need Him, when it pleases Him, so Christ also being by nature Lord and King everlasting, does not become Lord more than He was at the time He is sent forth, nor then begins to be Lord and King, but what He is ever, that He then is made according to the flesh; and, having redeemed all, He becomes thereby again Lord of quick and dead. For Him henceforth do all things serve, and this is David's meaning in the Psalm, 'The Lord said unto my Lord, Sit on My right hand, until I make Your enemies Your footstool. ' For it was fitting that the redemption should take place through none other than Him who is the Lord by nature, lest, though created by the Son, we should name another Lord, and fall into the Arian and Greek folly, serving the creature beyond the all-creating God.
15. This, at least according to my nothingness, is the meaning of this passage; moreover, a true and a good meaning have these words of Peter as regards the Jews. For Jews, astray from the truth, expect indeed the Christ as coming, but do not reckon that He undergoes a passion, saying what they understand not; 'We know that, when the Christ comes, He abides for ever, and how sayest Thou, that He must be lifted up?' Next they suppose Him, not the Word coming in flesh, but a mere man, as were all the kings. The Lord then, admonishing Cleopas and the other, taught them that the Christ must first suffer; and the rest of the Jews that God had come among them, saying, 'If He called them gods to whom the word of God came, and the Scripture cannot be broken, say ye of Him whom the Father has sanctified and sent into the world, Thou blaspheme, because I said, I am the Son of God?'
16. Peter then, having learned this from the Saviour, in both points set the Jews right, saying, “O Jews, the divine Scriptures announce that Christ comes, and you consider Him a mere man as one of David's descendants, whereas what is written of Him shows Him to be not such as you say, but rather announces Him as Lord and God, and immortal, and dispenser of life. For Moses has said, 'You shall see your Life hanging before your eyes. ' And David in the hundred and ninth Psalm, 'The Lord said unto My Lord, Sit on My right hand, till I make Your enemies Your footstool;' and in the fifteenth, 'You shall not leave my soul in hades, neither shall Thou suffer Your Holy One to see corruption. ' Now that these passages have not David for their scope he himself witnesses, avowing that He who was coming was His own Lord. Nay you yourselves know that He is dead, and His remains are with you. That the Christ then must be such as the Scriptures say, you will plainly confess yourselves. For those announcements come from God, and in them falsehood cannot be. If then ye can state that such a one has come before, and can prove him God from the signs and wonders which he did, you have reason for maintaining the contest, but if you are not able to prove His coming, but are expecting such an one still, recognise the true season from Daniel, for his words relate to the present time. But if this present season be that which was of old, afore-announced, and you have seen what has taken place among us, be sure that this Jesus, whom you crucified, this is the expected Christ. For David and all the Prophets died, and the sepulchres of all are with you, but that Resurrection which has now taken place, has shown that the scope of these passages is Jesus. For the crucifixion is denoted by 'You shall see your Life hanging,' and the wound in the side by the spear answers to 'He was led as a sheep to the slaughter,' and the resurrection, nay more, the rising of the ancient dead from out their sepulchres (for these most of you have seen), this is, 'You shall not leave My soul in hades,' and 'He swallowed up death in strength,' and again, 'God will wipe away.' For the signs which actually took place show that He who was in a body was God, and also the Life and Lord of death. For it became the Christ, when giving life to others, Himself not to be detained by death; but this could not have happened, had He, as you suppose, been a mere man. But in truth He is the Son of God, for men are all subject to death. Let no one therefore doubt, but the whole house of Israel know assuredly that this Jesus, whom you saw in shape a man, doing signs and such works, as no one ever yet had done, is Himself the Christ and Lord of all. For though made man, and called Jesus, as we said before, He received no loss by that human passion, but rather, in being made man, He is manifested as Lord of quick and dead. For since, as the Apostle said, 'in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.' And so, since we men would not acknowledge God through His Word, nor serve the Word of God our natural Master, it pleased God to show in man His own Lordship, and so to draw all men to Himself. But to do this by a mere man beseemed not; lest, having man for our Lord, we should become worshippers of man. Therefore the Word Himself became flesh, and the Father called His Name Jesus, and so 'made' Him Lord and Christ, as much as to say, 'He made Him to rule and to reign;' that while in the Name of Jesus, whom you crucified, every knee bows, we may acknowledge as Lord and King both the Son and through Him the Father.”
Source: Four Discourses Against the Arians (New Advent)