τὸν ἀφ' ἱερᾶς κινεῖν λίθον → move one's man from this line, move a piece from this line, try one's last chance, make a last ditch effort
P. and V. ἀληθής, P. ἀληθινός.
trustworthy: P. and V. πιστός, βέβαιος, P. ἀξιόπιστος.