Ambrose of Milan : We should be aware of the fact, therefore, that where God has planted the tree of life he has also planted a tree of the knowledge of good and evil in the midst of paradise. It is understood that he planted it in the middle. Therefore, in the middle of paradise there was both a tree of life and a cause for death. Keep in mind that man did not create life. By carrying out and observing the precepts of God it was possible for man to find life. This was the life mentioned by the apostle: "Your life is hidden with Christ in God." Man, therefore, was, figuratively speaking, either in the shadow of life—because our life on earth is but a shadow—or man had life, as it were, in pledge, for he had been breathed on by God. — On Paradise Ambrose of Milan : For this is the meaning of flight: to know your goal, to unburden oneself of the world, to unburden oneself of the body…. This is the meaning of flight from here—to die to the elements of this world, to hide one's life in God, to turn aside from corruptions, not to defile oneself with the objects of desire and to be ignorant of the things of this world. Augustine of Hippo : For then there will be nothing wanting they can desire, when God will be all in all. An end like that has no end. No one dieth there, where no one arriveth save he that dieth to this world, not that universal kind of death whereby the body is bereft of the soul; but the death of the elect, through which, even while still remaining in this mortal flesh, the heart is set on the things which are above. Of such a death it is that the apostle said, "For ye are dead, and your life is hid with Christ in God." And perhaps to this, also, do the words refer, "Love is strong as death." For by this love it is brought about, that, while still held in the present corruptible body, we die to this world, and our life is hid with Christ in God; yea, that love itself is our death to the world, and our life with God. For if that is death when the soul quits the body, how can it be other than death when our love quits the world? Such love, therefore, is strong as death. And what is stronger than that which bindeth the world? — Tractate 65 on the Gospel of John Origen of Alexandria : "Now our life is hidden with Christ; but when Christ, your life, shall be manifested, then you too shall be manifested with Him in glory." Let us hasten to this life, groaning and lamenting that we are in this tent, that we abide in the body. — DIALOGUE WITH HERACLIDES Philoxenus of Mabbug : And the glutton is not pleased to hear the other things which have been written by Paul upon fortitude and asceticism, either when he recounteth his numerous fastings, or when he crieth out to his disciples, saying, "Ye are dead unto the world," or when he writeth, "It is good for a man not to eat flesh, and not to drink wine," or his exhortation, "Through many tribulations it is meet for a man to enter into the kingdom of God," or his saying, "God shall bring both the belly and the food to nought;" and the reading of these and such like passages the glutton considereth unnecessary, and he is not pleased even to hear them. — 13 Ascetic Discourses, Discourse 10 -- On Gluttony Philoxenus of Mabbug : "Ye are dead," crieth Paul unto the perfect, "and your lives are hid with Christ in God." And again he said, "Ye are dead unto the world, but alive unto God, in our Lord Jesus Christ." And again he said, "If ye died with Christ from the elements of the world, why, as if ye were living in the world, do ye receive the commandments?" Now a man arriveth at this rule of life after he hath stripped himself of his possessions, and beginneth to work good deeds in the members of his person, for so long as he hath riches, he justifieth himself by riches, and he emptieth not himself from the cares of riches which he serveth in himself. — 13 Ascetic Discourses, Discourse 9 -- Second Discourse on Poverty Severian of Gabala : Our life is hidden until the blessing of eternal life shall be revealed to all, when the glory of Christ shall appear in his second coming. . Tertullian : " The heretic erased the preposition in, and made the clause run thus: ("what is the fellowship of the mystery) which hath for ages been hidden from the God who created all things." The falsification, however, is flagrantly absurd. — Against Marcion Book V