ἐπὶ πολλῆς ἡσυχίας καὶ ἠρεμίας ὑμῶν → leaving you entirely at rest
εἴην: εὐκτ. ἀορ. β΄ τοῦ ἵημι· ἀλλ’ εἴην εὐκτ. ἐνεστ. τοῦ εἰμὶ (ὑπάρχω).
opt. de εἰμί.
