Apostolic Constitutions, Book VII 9

1You shall honour him that speaks to you the word of God, and be mindful of him day and night; and you shall reverence him, not as the author of your birth, but as one that is made the occasion of your well-being. For where the doctrine concerning God is, there God is present. You shall every day seek the face of the saints, that you may acquiesce in their words.