λογισάμενος ὅτι καὶ ἐκ νεκρῶν ἐγεῖραι δυνατὸς ὁ Θεός → in the belief that God was able to raise him up from the dead
πρέπον: -οντος, τό, μετοχ. τοῦ πρέπω, ὃ ἴδε.