θείᾳ τύχῃ
From LSJ
ἄνευ γὰρ φίλων οὐδεὶς ἕλοιτ᾽ ἂν ζῆν, ἔχων τὰ λοιπὰ ἀγαθὰ πάντα → without friends no one would choose to live, though he had all other goods
Greek > English (Woodhouse)
by divine interposition, by divine intervention, by the interposition of the gods