ἱερεῦσιν (hiereusin)
ἱερεῦσιν is an Ancient Greek form of ἱερεύς, meaning “priest”. It is the dative plural masculine noun.
It can also be a form of ἱερόω, “consecrate”.
Found 64 times in the Ancient Greek texts on Socratos.
Where it is used
Diogenes Laertius, Vitae philosophorum 8.8.87: … εἰς Αἴγυπτον ἀπᾶραι μετὰ Χρυσίππου τοῦ ἰατροῦ, συστατικὰς φέροντα παρʼ Ἀγησιλάου πρὸς Νεκτάναβιν· τὸν δὲ τοῖς ἱερεῦσιν αὐτὸν συστῆσαι. καὶ τέτταρας μῆνας πρὸς ἐνιαυτῷ διατρίψαντʼ αὐτόθι ξυρόμενόν θʼ ὑπήνην καὶ ὀφρὺν τὴν Ὀκταετηρ …
Flavius Josephus, Jewish Antiquities 3.arg: … περὶ τῆς σκηνῆς ἣν κατεσκεύασε Μωυσῆς ἐν τῇ ἐρημίᾳ εἰς τιμὴν τοῦ θεοῦ, ὥστε ναὸν εἶναι δοκεῖν. τίνες τε τοῖς ἱερεῦσίν εἰσιν αἱ στολαὶ καὶ ἡ τοῦ ἀρχιερέως· καὶ τῶν ἁγνειῶν οἱ τρόποι καὶ περὶ τῶν ἑορτῶν καὶ ὡς ἑκάστη τῶν ἑορτῶν δ …
All forms of ἱερεύς (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.