Apostolic Tradition 36

1But if on any day there is no instruction, let everyone at home take the Bible and read sufficiently in passages that he finds profitable. If at the third hour thou art at home, pray then and give thanks to God; but if thou chance to be abroad at that hour, make thy prayer to God in thy heart. For at that hour Christ was nailed to the tree; therefore in the old [covenant] the law commanded the showbread to be offered continually for a type of the body and blood of Christ, and commanded the sacrifice of the dumb lamb, which was a type of the perfect Lamb; for Christ is the Shepherd, and he is also the Bread that came down from heaven. At the sixth hour likewise pray also, for, after Christ was nailed to the wood of the cross, the day was divided and there was a great darkness; wherefore let [the faithful] pray at that hour with an effectual prayer, likening themselves to the voice of him who prayed [and] caused all creation to become dark for the unbelieving Jews. And at the ninth hour let a great prayer and a great thanksgiving be made, such as made the souls of the righteous ones, blessing the Lord, the God who does not lie, who was mindful of his saints and sent forth his Word to enlighten them. At that hour, therefore, Christ poured forth from his pierced side water and blood, and brought the rest of the time of that day with light to evening; so, when he fell asleep, by making the beginning of another day he completed the pattern of his resurrection. Pray again before thy body rests on thy bed. At midnight arise, wash thy hands with water and pray. And if thy wife is with thee, pray ye both together; but if she is not yet a believer, go into another room and pray, and again return to thy bed; be not slothful in prayer. He who has used the marriage bed is not defiled; for they who are bathed have no need to wash again, for they are clean. By signing thyself with thy moist breath, and so spreading spittle on thy body with thy hand, thou art sanctified to thy feet; for the gift of the Spirit and the sprinkling with water, when it is brought with a believing heart as it were from a fountain, sanctifies him who believes. It is needful to pray at this hour; for those very elders who gave us the tradition taught us that at this hour all creation rests for a certain moment, that all creatures may praise the Lord: stars and trees and waters stand still with one accord, and all the angelic host does service to God by praising Him, together with the souls of the righteous. For this cause believers should be zealous to pray at this hour; for the Lord, testifying to this, says: “Behold at midnight is a cry, Behold the Bridegroom cometh! Rise up to meet him!”; and he adds insistently: “Watch ye therefore, for ye know not at what hour he cometh”. And at cockcrow rise up and pray likewise, for at that hour of cockcrow the children of Israel denied Christ, whom we have known by faith; by which faith, in the hope of eternal life at the resurrection of the dead, we look for his Day. And so, all ye faithful, if ye thus act, and are mindful of these things, and teach them to one another, and cause the catechumens to be zealous, ye can neither be tempted nor can ye perish, since ye have Christ always in your minds.