ἐπὶ πολλῆς ἡσυχίας καὶ ἠρεμίας ὑμῶν → leaving you entirely at rest
συάκιον: τό, ὑποκορ. τοῦ σύαξ, Ἱεροφ. ἐν Ideler Phys. 1. 412.