Pliny the Younger.
They affirmed, however, the whole of their guilt, or their error, was, that they were in the habit of meeting on a certain fixed day before it was light, when they sang in alternate verses a hymn to Christ, as to a god, and bound themselves by a solemn oath, not to any wicked deeds, but never to commit any fraud, theft or adultery, never to falsify their word, nor deny a trust when they should be called upon to deliver it up; after which it was their custom to separate, and then reassemble to partake of food but food of an ordinary and innocent kind.
Early Christian Banquet Worship
E