Hath anointed thee (echrisen se). First aorist active indicative of chriō, to anoint, from which verb the verbal Christos (Anointed One) comes. See Christ’s use of echrisen in Luk 4:18 from Isa 66:1.
With the oil of gladness (elaion agalliaseōs). Accusative case with echrisen (second accusative besides se). Perhaps the festive anointing on occasions of joy (Heb 12:2). See Luk 1:44.
Fellows (metochous). Old word from metechō, partners, sharers, in N.T. only in Hebrews save Luk 5:7. Note para with accusative here, beside, beyond, above (by comparison, extending beyond).