Theophylact of Ohrid, on Jude 1:13

“Raging waves of the sea, foaming out their own confusion; wandering stars, to whom the storm of darkness is reserved for ever.”

“He calls them "wandering stars." Heretics are like them not in the sense that they shine in the firmament of our faith and through them passes the Sun of righteousness, Christ, who brings virtues to maturity and gives life to the faithful devoted to them, but in the sense that, appearing to have taken upon themselves the guise of an angel of light, like their originators, the demons (2 Cor. 11:13–14), they rush only against the teachings of the Lord, by which they both darken those who approach them and prepare for themselves eternal darkness. He likens them to "raging waves." They bear resemblance to these as well; for, driven by the spirits of wickedness, they foam madly and uncontrollably in blasphemies against God with their shameful deeds and end the inconstant and easily destroyed shame of their life in the foam of proud blasphemies. For such is also the foam of the waves to which they are likened.”

Imported from an open dataset — not yet checked against the printed edition.