ἐφ' ὅσον αὐτοῦ ἡ ὑπόστασις τῶν χρόνων ὑπῆρχεν → as long as his store of years lasted
3ᵉ pl. épq. ao. Pass. de σαόω.
ἐσάωθεν: эп. 3 л. pl. aor. pass. к σαόω.