Ante-Nicene Fathers, Vol IX:
Epistle to Gregory and Origen's Commentary on the Gospel of John.: Chapter XXXIV

34.  The Morning and Evening Sacrifices of the Saint in His Life of Thought.

But if any one asks what the saint is to do in the time between morning and evening, let him follow what takes place in the cultus and infer from it the principle he asks for.  In that case the priests begin their offerings with the continual sacrifice, and before they come to the continuous one of the evening they offer the other sacrifices which the law prescribes, as, for example, that for transgression, or that for involuntary offences, or that connected with a prayer for salvation, or that of jealousy, or that of the Sabbath, or of the new moon, and so on, which it would take too long to mention.  So we, beginning our oblation with the discourse of that type which is Christ, can go on to discourse about many other most useful things.  And drawing to a close still in the things of Christ, we come, as it were, to evening and night, when we arrive at the bodily features of His manifestation.