Career
Nothing is known about his life. He was a monk and lived in the monastery of the Virgin Mary near Constantinople. He also wrote a commentary on the Psalms, one on the four gospels, and one on the letters of Saint Paul.
These are based mainly on patristic sources.
Bruce Metzger argued that "Number Greek Church Father prior to Euthymius Zigabenus (twelfth century) comments on this passage, and Euthymius declares that the accurate copies of the Gospel do not contain it". But this is somewhat misleading, in that Didymus the Blind discusses it, albeit not in John"s gospel, and Jerome also refers to it, among others
Zigabenus says:
But it is necessary to know that the things which are found from this place to that where it is said: Therefore Jesus again spoke of these things saying, I am the light of the world: in the more exact copies, these are either not found, or marked with an obelus, because they seem illegitimate and added. And the argument for this is because Chrysostom makes no mention anywhere of this.
But for us we must also declare that this, because it is not without usefulness, is the chapter on the woman taken in adultery, which is placed between these.