Deuteronomy 6:5

Let no man deceive himself. Unless he believes that Christ Jesus has lived in the flesh, and shall confess His cross and passion, and the blood which He shed for the salvation of the world, he shall not obtain eternal life, whether he be a king, or a priest, or a ruler, or a private person, a master or a servant, a man or a woman. “He that is able to receive it, let him receive it.” Let no man’s place, or dignity, or riches, puff him up; and let no man’s low condition or poverty abase him. For the chief points are faith towards God, hope towards Christ, the enjoyment of those good things for which we look, and love towards God and our neighbour. …

1. Thus then does the Lord plainly show that it was the true Lord and the one God who had been set forth by the law; for Him whom the law proclaimed as God, the same did Christ point out as the Father, whom also it behoves the disciples of Christ alone to serve. By means of the statements of the law, He put our adversary to utter confusion; and the law directs us to praise God the Creator ( Demiurgum ), and to serve Him alone. Since this is the case, we must not seek for another Father besides Him, or above Him, since there is one God who justifies the circumcision by faith, and the uncircumcision through faith. For if there were any other perfect Father above Him, He (Christ) would by no means have overthrown Satan by means of His words and commandments. For one ignorance cannot be done away with by means of another ignorance, any more than one defect by another defect. …

For what, think you, O men, is the Hermes of Typho, and that of Andocides, and that of Amyetus? Is it not evident to all that they are stones, as is the veritable Hermes himself? As the Halo is not a god, and as the Iris is not a god, but are states of the atmosphere and of the clouds; and as, likewise, a day is not a god, nor a year, nor time, which is made up of these, so neither is sun nor moon, by which each of those mentioned above is determined. Who, then, in his right senses, can imagine Correction, and Punishment, and Justice, and Retribution to be gods? For neither the Furies, nor the Fates, nor Destiny are gods, since neither Government, nor Glory, nor Wealth are gods, which last [as Plutus] painters represent as blind. But if you deify Modesty, and Love, and Venus, let these be followed by Infamy, and Passion, and Beauty, and Intercourse. …

Ex iis autem, qui ab hæresi ducuntur, Marciohis quidem Pontici fecimus mentionem, qui propter certamen, quod adversus Creatorem suscepit, mundanarum rerum usum recusat. Ei autem continentiæ causa est, si modo est ea dicenda continentia, ipse Creator, cui se adversari existimans gigas iste cum Deo pugnans, est invitus continens, dum in creationem et Dei opus invehitur. Quod si usurpent vocem Domini, qui dicit Philippo: “Sine mortuos sepelire mortuos suos, tu autem sequere me:” at illud considerent, quod similem cam is formationem fert quoque Philippus, non habens cadaver pollutum. Quomodo ergo cum carhem haberet, non habuit cadaver? Quoniam surrexit ex monumento, Domino ejus vitia morte afficiente, vixit autem Christo. Meminimus autem nefariæ quoque ex Carpocratis sententia mulierum communionis. …

I prefer elsewhere refuting the faults which the Marcionites find in the Creator. It is here enough that they are also found in Christ. Behold how unequal, inconsistent, and capricious he is! Teaching one thing and doing another, he enjoins “giving to every one that seeks;” and yet he himself refuses to give to those “who seek a sign.” For a vast age he hides his own light from men, and yet says that a candle must not be hidden, but affirms that it ought to be set upon a candlestick, that it may give light to all. He forbids cursing again , and cursing much more of course; and yet he heaps his woe upon the Pharisees and doctors of the law. Who so closely resembles my God as His own Christ? We have often already laid it down for certain, that He could not have been branded as the destroyer of the law if He had promulged another god. …

Furthermore, since both circumcision and uncircumcision were attributed to the same Deity, both lost their power in Christ, by reason of the excellency of faith, of that faith concerning which it had been written, “And in His name shall the Gentiles trust?”, of that faith “which,” he says “worketh by love.” By this saying he also shows that the Creator is the source of that grace. For whether he speaks of the love which is due to God, or that which is due to one’s neighbor, in either case, the Creator’s grace is meant: for it is He who enjoins the first in these words, “Thou shalt love God with all thine heart, and with all thy soul, and with all thy strength;” and also the second in another passage: “Thou shalt love thy neighbour as thyself.” “But he that troubleth you shall have to bear judgment.” From what God? From (Marcion’s) most excellent god? But he does not execute judgment. …

In Deuteronomy: “Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy might.” Also in the Gospel according to Matthew: “He that loveth father or mother above me, is not worthy of me; and he that loveth son or daughter above me, is not worthy of me; and he that taketh not up his cross and followeth me, is not my disciple.” Also in the Epistle of Paul to the Romans: “Who shall separate us from the love of Christ? shall tribulation, or distress, or persecution, or famine, or nakedness, or peril, or sword? As it is written, Because for thy sake we are killed all the day long, we are counted as sheep for the slaughter. But in all these things we are more than conquerors for His sake who loved us.”

Therefore, taking to you a masculine and sober mind, oppose your armour to the swelling beast, and do not at all give way, nor be troubled because of his fury. For you will have immense glory if you overcome him, and take away the seven crowns which are upon him, on account of which we have to struggle and wrestle, according to our teacher Paul. For she who having first overcome the devil, and destroyed his seven heads, becomes possessed of the seven crowns of virtue, having gone through the seven great struggles of chastity. For incontinence and luxury is a head of the dragon; and whoever bruises this is wreathed with the crown of temperance. Cowardice and weakness is also a head; and he who treads upon this carries off the crown of martyrdom. …

II . The first way, therefore, is that of life; and is this, which the law also does appoint: “To love the Lord God with all thy mind, and with all thy soul, who is the one and only God, besides whom there is no other;” “and thy neighbour as thyself.” And whatsoever thou wouldest not should be done to thee, that do not thou to another.” “Bless them that curse you; pray for them that despitefully use you.” “Love your enemies; for what thanks is it if ye love those that love you? for even the Gentiles do the same.” “But do ye love those that hate you, and ye shall have no enemy.” For says He, “Thou shalt not hate any man; no, not an Egyptian, nor an Edomite;” for they are all the workmanship of God. Avoid not the persons, but the sentiments, of the wicked. …

15. Can it at any time or place be an unrighteous thing for a man to love God with all his heart, with all his soul, and with all his mind, and his neighbour as himself? Therefore those offences which be contrary to nature are everywhere and at all times to be held in detestation and punished; such were those of the Sodomites, which should all nations commit, they should all be held guilty of the same crime by the divine law, which hath not so made men that they should in that way abuse one another. For even that fellowship which should be between God and us is violated, when that same nature of which He is author is polluted by the perversity of lust. …

21. Neither ought any one to have joy in himself, if you look at the matter clearly, because no one ought to love even himself for his own sake, but for the sake of Him who is the true object of enjoyment. For a man is never in so good a state as when his whole life is a journey towards the unchangeable life, and his affections are entirely fixed upon that. If, however, he loves himself for his own sake, he does not look at himself in relation to God, but turns his mind in upon him self, and so is not occupied with anything that is unchangeable. And thus he does not enjoy himself at his best, because he is better when his mind is fully fixed upon, and his affections wrapped up in, the unchangeable good, than when he turns from that to enjoy even himself. …

18. But there are yet more testimonies in the divine Scriptures concerning the love of God. For in it, those other two [namely, memory and understanding] are understood by consequence, inasmuch as no one loves that which he does not remember, or of which he is wholly ignorant. And hence is that well known and primary commandment, “Thou shalt love the Lord thy God.” The human mind, then, is so constituted, that at no time does it not remember, and understand, and love itself. But since he who hates any one is anxious to injure him, not undeservedly is the mind of man also said to hate itself when it injures itself. For it wills ill to itself through ignorance, in that it does not think that what it wills is prejudicial to it; but it none the less does will ill to itself, when it wills what would be prejudicial to it. …