From yesterday's post, we see a quote from the Gospel of Philip that refers to "mysteries." The mysteries in question are what we often term "sacraments" today, and it's a list containing of some of the more recognizable ones, namely Baptism, Chrism (Chrismation, or what Western Christians tend to refer to more commonly as Confirmation), and the Eucharist. (Commentary on Redemption and the Bridal Chamber can be saved for a different post).
I think the important thing here is the explicit mentioning of the Eucharist and Chrism as being part of the sacramental system. At least for some Christian groups, these were obviously established as part of what the tradition was about.
Sometimes readings of the canonical Scriptures can really show a lack of emphasis on Eucharistic celebrations; it's easy to prooftext perspectives regarding the Eucharist by pointing to a lack of mentioning it consistently.
Yet the celebration obviously existed among other groups, and rightly so.
More commentary to come later.