Apostolic Constitutions, Book V 4
1But he that denies himself to be a Christian, that he may not be hated of men, and so loves his own life more than he does the Lord, in whose hand his breath is, is wretched and miserable, as being detestable and abominable, who desires to be the friend of men, but is the enemy of God, having no longer his portion with the saints, but with those that are accursed; choosing instead of the kingdom of the blessed, that eternal fire which is prepared for the devil and his angels: not being any longer hated by men, but rejected by God, and cast out from His presence. For of such a one our Lord declared, saying: Whosoever shall deny me before men, and shall be ashamed of my name, I also will deny and be ashamed of him before my Father which is in heaven. And again He speaks thus to us ourselves, His disciples: He that loves father or mother more than me, is not worthy of me; and he that loves son or daughter more than me, is not worthy of me; and he that takes not his cross, and follows after me, is not worthy of me. He that finds his life, shall lose it; and he that loses his life for my sake, shall find it. For what is a man profited, if he shall gain the whole world, and lose his own soul? Or what shall a man give in exchange for his soul? And afterwards: Fear not those who kill the body, but are not able to kill the soul; but rather fear Him who is able to destroy both soul and body in hell.