Andreas of Caesarea : There were other heretics who denied the Son but claimed to know the Father. In fact of course they did not know the Father either, because if they had known him they would have known that he is the Father of the only-begotten Son. These people were similar to the Jews, who say that they know the Father but do not accept the Son. They are also like the Simonians, who share the same ungodly confusion. — CATENA Augustine of Hippo : These things are now manifest, my brethren. Let no man say, I do not worship Christ, but I worship God His Father. "Every one that denieth the Son, hath neither the Son nor the Father; and he that confesseth the Son, hath both the Son and the Father." He speaks to you that are grain: and let those who were chaff, hear, and become grain. Let each one, looking well to his own conscience, if he be a lover of the world, be changed; let him become a lover of Christ, that he be not an antichrist. If one shall tell him that he is an antichrist, he is wroth, he thinks it a wrong done to him; perchance, if he is told by him that strives with him that he is an antichrist, he threatens an action at law. Christ saith to him, Be patient; if thou hast been falsely spoken of, rejoice with me, because I also am falsely spoken of by the antichrists: but if thou art truly spoken of, come to an understanding with thine own conscience; and if thou fear to be called this, fear more to be it. — Ten Homilies on 1 John 3 Bede : Everyone who denies the Son does not have the Father either, etc. Here he seeks the confession of the heart, the voice, and the work, as Paul sought when he said: And no one can say "Jesus is Lord" except by the Holy Spirit; which is openly to say: No one can, unless by the grace of the Holy Spirit granted, serve the Lord Christ with perfect profession and action. — Commentary on the Catholic Epistles Clement of Alexandria ((as quoted by Cassiodorus)) : "He who denies the Son," by ignoring Him, "has not the Father, nor does he know Him." But he who knows the Son and the Father, knows according to knowledge, and when the Lord shall be manifested at His second advent, shall have confidence and not be confounded. Which confusion is heavy punishment. — From the Latin Translation of Cassiodorus Cyprian : That God is so angry against idolatry, that He has even enjoined those to be slain who persuade others to sacrifice and serve idols. In Deuteronomy: "But if thy brother, or thy son, or thy daughter, or thy wife which is in thy bosom, or thy friend which is the fellow of thine own soul, should ask thee secretly, saying, Let us go anti serve other gods, the gods of the nations, thou shalt not consent unto him, and thou shalt not hearken unto him, neither shall thine eye spare him, neither shalt thou conceal him, declaring thou shalt declare concerning him. Thine hand shall be upon him first of all to put him to death, and afterwards the hand of all the people; and they shall stone him, and he shall die, because he hath sought to turn thee away from the Lord thy God." And again the Lord speaks, and says, that neither must a city be spared, even though the whole city should consent to idolatry: "Or if thou shalt hear in one of the cities which the Lord thy God shall give thee, to dwell there, saying, Let us go and serve other gods, which thou hast not known, slaying thou shalt kill all who are in the city with the slaughter of the sword, and bum the city with fire, and it shall be without habitation for ever. Moreover, it shall no more be rebuilt, that the Lord may be turned from the indignation of His anger. And He will show thee mercy, and He will pity thee, and will multiply thee, if thou wilt hear the voice of the Lord thy God, and wilt observe His precepts." Remembering which precept and its force, Mattathias slew him who had approached the altar to sacrifice. But if before the coming of Christ these precepts concerning the worship of God and the despising of idols were observed, how much more should they be regarded since Christ's advent; since He, when He came, not only exhorted us with words, but with deeds also, but after all wrongs and contumelies, suffered also, and was crucified, that He might teach us to suffer and to die by His example, that there might be no excuse for a man not to suffer for Him, since He suffered for us; and that since He suffered for the sins of others, much rather ought each to suffer for his own sins. And therefore in the Gospel He threatens, and says: "Whosoever shall confess me before men, him will I also confess before my Father which is in heaven; but whosoever shall deny me before men, him will I also deny before my Father which is in heaven." The Apostle Paul also says: "For if we die with Him, we shall also live with Him; if we suffer, we shall also reign with Him; if we deny Him, He also will deny us." John too: "Whosoever denieth the Son, the same hath not the Father; he that acknowledgeth the Son, hath both the Son and the Father." Whence the Lord exhorts and strengthens us to contempt of death, saying: "Fear not them which kill the body, but are not able to kill the soul; but rather fear Him which is able to kill soul and body in Gehenna." And again: "He that loveth his life shall lose it; and he who hateth his life in this world, shall keep it unto life eternal." — Treatise XI Exhortation to Martyrdom Addressed to Fortunatus Cyprian : That it is impossible to attain to God the Father, except by His Son Jesus Christ. In the Gospel: "I am the way, and the truth, and the life: no one cometh to the Father but by me." Also in the same place: "I am the door: by me if any man shall enter in, he shall be saved." Also in the same place: "Many prophets and righteous men have desired to see the things which ye see, and have not seen them; and to hear those things which ye hear, and have not heard them." Also in the same place: "He that believeth on the Son hath eternal life: he that is not obedient in word to the Son hath not life; but the wrath of God shall abide upon him." Also Paul to the Ephesians: "And when He had come, He preached peace to you, to those which are afar off, and peace to those which are near, because through Him we both have access in one Spirit unto the Father." Also to the Romans: "For all have sinned, and fail of the glory of God; but they are justified by His gift and grace, through the redemption which is in Christ Jesus." Also in the Epistle of Peter the apostle: "Christ hath died once for our sins, the just for the unjust, that He might present us to God." Also in the same place: "For in this also was it preached to them that are dead, that they might be raised again." Also in the Epistle of John: "Whosoever denieth the Son, the same also hath not the Father. He that confesseth the Son, hath both the Son and the Father." — Treatise XII. Three Books of Testimonies Against the Jews. Hilary of Arles : You cannot know the Father if you deny the Son, because no one comes to the Father except through him. — INTRODUCTORY COMMENTARY ON 1 JOHN Oecumenius : "Whoever denies the Son does not have the Father either." For some heretics, from whom the impure Valentinus arose, claimed that there is another unnamed Father besides him who is called the Father of Christ. They also deny the Son, because they say he is merely a unveiled man and not God by nature, as if he were from God. "Whoever denies the Son does not have the Father," just as the Jews, while denying the Son, pretend to know the Father and claim this for themselves. But let them know that they have not known the Father either; for if they had known, they would have known that He is also the Father of the Only Begotten Son. The same nonsense was also uttered by those who followed Simon. — Commentary on 1 John