Cyril of Jerusalem : For since a person's nature is twofold, compounded of soul and body, the purification is also twofold, incorporeal for the incorporeal part, bodily for the body. For as the water purifies the body, so the Spirit seals the soul, that having our hearts sprinkled and our bodies washed with clean water, we may draw near to God. Therefore, when about to enter the water, do not regard it as mere water, but look for its saving power by the efficacy of the Holy Spirit, for without both you cannot be made perfect. It is not I who say this, but the Lord Jesus, who has the power in this matter, says, "Unless one is born of water and the Spirit, he cannot enter the kingdom of God." Neither does he who is baptized but has not been deemed worthy of the Spirit possess perfect grace; nor will one who acts virtuously, but does not receive the seal by water, enter into the kingdom of heaven. This may appear a bold saying, but it is not mine, for it was Jesus who pronounced it. — Catechetical Lecture 3:4 John Chrysostom : "Let us draw near" (he says) "with a true heart." To what should we "draw near"? To the holy things, the faith, the spiritual service. "With a true heart, in full assurance of faith," since nothing is seen; neither the priest henceforth, nor the sacrifice, nor the altar. And yet neither was that priest visible, but stood within, and they all without, the whole people. But here not only has this taken place, that the priest has entered into the holy of holies, but that we also enter in. Therefore he says, "in full assurance of faith." For it is possible for the doubter to believe in one way, as there are even now many who say, that of some there is a resurrection and of others not. But this is not faith. "In full assurance of faith" (he says); for we ought to believe as concerning things that we see, nay, even much more; for "here" it is possible to be deceived in the things that are seen, but there not: "here" we trust to the senses, but there to the Spirit. "Having our hearts sprinkled from an evil conscience." He shows that not faith only, but a virtuous life also is required, and the consciousness to ourselves of nothing evil. Since the holy of holies does not receive "with full assurance" those who are not thus disposed. For they are holy, and the holy of holies; but here no profane person enters. They were sprinkled as to the body, we as to the conscience, so that we may even now be sprinkled over with virtue itself. "And having our body washed with pure water." Here he speaks of the Washing, which no longer cleanses the bodies, but the soul. What is "let us draw near with a true heart"? That is, without hypocrisy; for "woe be to a fearful heart, and faint hands": let there be (he means) no falsehood among us; let us not say one thing and think another; for this is falsehood; neither let us be fainthearted, for this is not [a mark] of a "true heart." Faintheartedness comes from not believing. But how shall this be? If we fully assure ourselves through faith. "Having our hearts sprinkled": why did he not say "having been purified"? Because he wished to point out the difference of the sprinklings: the one he says is of God, the other our own. For the washing and sprinkling the conscience is of God; but "the drawing near with" truth and "in full assurance of faith" is our own. What is "and having our bodies washed with pure water"? With water which makes pure; or which has no blood. — Homily on Hebrews 19 Oecumenius : "let us draw near with a true heart." In the faith of Christ with truth, having nothing false or deceitful. "in full assurance of faith." For hereafter, nothing is visible, neither the temple, that is, the heaven, nor the high priest, that is, Christ, nor the sacrifice, that is, his body, but there is a need for faith. And since there is both believing and doubting, he says, "in full assurance of faith," that is, so that we may be fully informed about these things. "having our hearts sprinkled." This shows that there is a need not only for faith but also for a righteous life. "sprinkled." The Jews, he says, sprinkle their bodies; but let us sprinkle and purify our consciences, so that we may not have any evil consciousness of ourselves. "with pure water," that is, with baptism. For the Jews, by washing, only cleanse the body; but we purify the soul with baptism. For the water we have is pure, that is, purifying. — The Pseudo-Oecumenian Catena on Hebrews Tertullian : These things I cannot ask from any but the God from whom I know I shall obtain them, both because He alone bestows them and because I have claims upon Him for their gift, as being a servant of His, rendering homage to Him alone, persecuted for His doctrine, offering to Him, at His own requirement, that costly and noble sacrifice of prayer despatched from the chaste body, an unstained soul, a sanctified spirit, not the few grains of incense a farthing buys -tears of an Arabian tree,-not a few drops of wine,-not the blood of some worthless ox to which death is a relief, and, in addition to other offensive things, a polluted conscience, so that one wonders, when your victims are examined by these vile priests, why the examination is not rather of the sacrificers than the sacrifices. — The Apology