ἄνθρωπος ὢν ἥμαρτον· οὐ θαυμαστέον → being human I made a mistake; there is nothing remarkable about it
stand at bay, v. P. πρὸς ἀλκὴν τρέπεσθαι, V. ἐς ἀλκην ἐλθεῖν.