Justin Martyr

Since we're on the subject of preaching Christ from the OT,
thought we could do a few Justin Martyr quotes,
Justin's my favourite author - he's from 100+ AD,
so taught by the people the apostles taught,
and is incredible to see how he uses the old testament,
since it seems the only NT book he's quoting from is Matthew

All these are from his dialogue with Trypho the Jew

Even you, who are the circumcised according to the flesh, have need of our circumcision; but we, having the latter, do not require the former. For if it were necessary, as you suppose, God would not have made Adam uncircumcised would not have had respect to the gifts of Abel when, being uncircumcised, he offered sacrifice and would not have been pleased with the uncircumcision of Enoch, who was not found, because God had translated him. Lot, being uncircumcised, was saved from Sodom, the angels themselves and the Lord sending him out. Noah was the beginning of our race; yet, uncircumcised, along with his children he went into the ark. Melchizedek, the priest of the Most High, was uncircumcised; to whom also Abraham the first who received circumcision after the flesh, gave tithes, and he blessed him: after whose order God declared, by the mouth of David, that He would establish the everlasting priest. Therefore to you alone this circumcision was necessary, in order that the people may be no people, and the nation no nation; as also Hosea, one of the twelve prophets, declares. Moreover, all those righteous men already mentioned, though they kept no Sabbaths, were pleasing to God; and after them Abraham with all his descendants until Moses, under whom your nation appeared unrighteous and ungrateful to God, making a calf in the wilderness: wherefore God, accommodating Himself to that nation, enjoined them also to offer sacrifices, as if to His name, in order that you might not serve idols. (XIX)

"I do not say so; but those who have persecuted and do persecute Christ, if they do not repent, shall not inherit anything on the holy mountain. But the Gentiles, who have believed on Him, and have repented of the sins which they have committed, they shall receive the inheritance along with the patriarchs and the prophets, and the just men who are descended from Jacob, even although they neither keep the Sabbath, nor are circumcised, nor observe the feasts. Assuredly they shall receive the holy inheritance of God. (XXVI)

What need, then, have I of circumcision, who have been witnessed to by God? What need have I of that other baptism, who have been baptized with the Holy Ghost? I think that while I mention this, I would persuade even those who are possessed of scanty intelligence. For these words have neither been prepared by me, nor embellished by the art of man; but David sung them, Isaiah preached them, Zechariah proclaimed them, and Moses wrote them. Are you acquainted with them, Trypho? They are contained in your Scriptures, or rather not yours, but ours. For we believe them; but you, though you read them, do not catch the spirit that is in them. (XXIX)

And where it has been said, 'O God, give Thy judgment to the king,' since Solomon was king, you say that the Psalm refers to him, although the words of the Psalm expressly proclaim that reference is made to the everlasting King, i.e., to Christ. For Christ is King, and Priest, and God, and Lord, and angel, and man, and captain, and stone, and a Son born, and first made subject to suffering, then returning to heaven, and again coming with glory, and He is preached as having the everlasting kingdom: so I prove from all the Scriptures. (XXXIV)

"And the offering of fine flour, sirs," I said, "which was prescribed to be presented on behalf of those purified from leprosy, was a type of the bread of the Eucharist, the celebration of which our Lord Jesus Christ prescribed, in remembrance of the suffering which He endured on behalf of those who are purified in soul from all iniquity, in order that we may at the same time thank God for having created the world, with all things therein, for the sake of man, and for delivering us from the evil in which we were, and for utterly overthrowing principalities and powers by Him who suffered according to His will. (XLI)

Now assuredly, Trypho, I shall show that, in the vision of Moses, this same One alone who is called an Angel, and who is God, appeared to and communed with Moses. For the Scripture says thus:'The Angel of the Lord appeared to him in a flame of fire from the bush; and he sees that the bush bums with fire, but the bush was not consumed. And Moses said, I will turn aside and see this great sight, for the bush is not burnt. And when the Lord saw that he is turning aside to behold, the Lord called to him out of the bush.' In the same manner, therefore, in which the Scripture calls Him who appeared to Jacob in the dream an Angel, then[says] that the same Angel who appeared in the dream spoke to him, saying,'I am the God that appeared to thee when thou didst flee from the face of Esau thy brother;'and[again] says that, in the judgment which befell Sodom in the days of Abraham, the Lord had inflicted the punishment of the Lord who[dwells] in the heavens;--even so here, the Scripture, in announcing that the Angel of the Lord appeared to Moses, and in afterwards declaring him to be Lord and God, speaks of the same One, whom it declares by the many testimonies already quoted to be minister to God, who is above the world, above whom there is no other[God]. (LX)

Thus it is written: 'And the Lord spake to Moses, Say to this people, Behold, I send My angel before thy face, to keep thee in the way, to bring thee into the land which I have prepared for thee. Give heed to Him, and obey Him; do not disobey Him. For He will not draw back from you; for My name is in Him.' Now understand that He who led your fathers into the land is called by this name Jesus, and first called Auses(Oshea). For if you shall understand this, you shall likewise perceive that the name of Him who said to Moses, 'for My name is in Him,' was Jesus. For, indeed, He was also called Israel, and Jacob's name was changed to this also. (LXXV)

"Moreover, the prophecy, 'Behold, the virgin shall conceive, and bear a son,' was uttered respecting Him. For if He to whom Isaiah referred was not to be begotten of a virgin, of whom did the Holy Spirit declare, 'Behold, the Lord Himself shall give us a sign: behold, the virgin shall conceive, and bear a son?' For if He also were to be begotten of sexual intercourse, like all other first-born sons, why did God say that He would give a sign which is not common to all the first-born sons? But that which is truly a sign, and which was to be made trustworthy to mankind,--namely, that the first-begotten of all creation should become incarnate by the Virgin's womb, and be a child,--this he anticipated by the Spirit of prophecy, and predicted it, as I have repeated to you, in various ways; in order that, when the event should take place, it might be known as the operation of the power and will of the Maker of all things; just as Eve was made from one of Adam's ribs, and as all living beings were created in the beginning by the word of God. But you in these matters venture to pervert the expositions which your elders that were with Ptolemy king of Egypt gave forth, since you assert that the Scripture is not so as they have expounded it, but says, 'Behold, the young woman shall conceive,' as if great events were to be inferred if a woman should beget from sexual intercourse: which indeed all young women, with the exception of the barren, do; but even these, God, if He wills, is able to cause[to bear]. For Samuel's mother, who was barren, brought forth by l the will of God; and so also the wife of the holy patriarch Abraham; and Elisabeth, who bore John the Baptist, and other such. So that you must not suppose that it is impossible for God to do anything He wills. And especially when it was predicted that this would take place, do not venture to pervert or misinterpret the prophecies, since you will injure yourselves alone, and will not harm God. (LXXXIV)

Hear, then, how this Man, of whom the Scriptures declare that He will come again in glory after His crucifixion, was symbolized both by the tree of life, which was said to have been planted in paradise, and by those events which should happen to all the just. Moses was sent with a rod to effect the redemption of the people; and with this in his hands at the head of the people, he divided the sea. By this he saw the water gushing out of the rock; and when he cast a tree into the waters of Marah, which were bitter, he made them sweet. Jacob, by putting rods into the water-troughs, caused the sheep of his uncle to conceive, so that he should obtain their young. With his rod the same Jacob boasts that he had crossed the river. He said he had seen a ladder, and the Scripture has declared that God stood above it. But that this was not the Father, we have proved from the Scriptures. And Jacob, having poured oil on a stone in the same place, is testified to by the very God who appeared to him, that he had anointed a pillar to the God who appeared to him. And that the stone symbolically proclaimed Christ, we have also proved by many Scriptures; and that the unguent, whether it was of oil, or of stacte, or of any other compounded sweet balsams, had reference to Him, we have also proved, inasmuch as the word says: 'Therefore God, even Thy God, hath anointed Thee with the oil of gladness above Thy fellows.' For indeed all kings and anointed persons obtained from Him their share in the names of kings and anointed: just as He Himself received from the Father the titles of King, and Christ, and Priest, and Angel, and such like other titles which He bears or did bear. Aaron's rod, which blossomed, declared him to be the high priest. Isaiah prophesied that a rod would come forth from the root of Jesse,[and this was] Christ. And David says that the righteous man is 'like the tree that is planted by the channels of waters, which should yield its fruit in its season, and whose leaf should not fade.' Again, the righteous is said to flourish like the palm-tree. God appeared from a tree to Abraham, as it is written, near the oak in Mature. The people found seventy willows and twelve springs after crossing the Jordan. David affirms that God comforted him with a rod and staff. Elisha, by casting a stick into the river Jordan, recovered the iron part of the axe with which the sons of the prophets had gone to cut down trees to build the house in which they wished to read and study the law and commandments of God; even as our Christ, by being crucified on the tree, and by purifying with water, has redeemed us, though plunged in the direst offences which we have committed, and has made a house of prayer and adoration. Moreover, it was a rod that pointed out Judah to be the father of Tamar's sons by a great mystery." (LXXXVI)

and so many more...