Arethas
(Ἀρέθας).
1. Archbishop of Caesareia in Cappadocia at an uncertain time (A. D. 540, according to Coccius and Cave), appears to have succeeded Andreas. Works Commentary on the Apocalypse
He wrote a commentary on the Apocalypse (συλλογὴ ἐξηγήσεων ἐκ διαφόρων ἁγίων ανδρῶν εἰς τὴν Ἰωάννου τοῦ ἀγαπημένου καὶ εὐαγγελιστοῦ Ἀποκάλυψιν), which, as its title implies, was compiled from many previous works, and especially from that of Andreas. Editions
It is usually printed with the works of Oecumenius.
2. Presbyter of Caesareia in Cappadocia, wrote a work " on the translation of St. Euthymius, patriarch of Constantinople," who died A. D. 911. The date of Arethas is therefore fixed at 920. (Oudinus, Comment. de Script. Eccles. ii. p. 426, who, without sufficient reason, identifies the former Arethas with this writer.)
3. The author of an epigram " On his own Sister" (ἐπὶ τῇ ἰδίᾳ ἀδελφῇ), which is found in the Vatican MS. under the title of Ἀρέθα τοῦ διακόνου. (Jacobs, Paralip. ex Cod. Vatic. No. 211, in Anthol. Graec. xiii. p. 744.) If the words added in the margin, γεγονότος δὲ καὶ ἀρχεπισκόπου Καισαοείας Καππαδοκίας, may be taken as an authority, he was the same person as the Archbishop of Caesareia. [P.S]