Thy life shall hang in doubt before thee; literally, Thy life shall be hung up before thee; i.e. shall be like an object suspended by a thread which hangs dangling before the view, ready to fall or to be cut down at any moment. Comp.—
"Omnia sunt hominum tenui pendentia filo
Et subito casu quae valuere ruunt."
(Ovid, 'Epp. ex Ponto,' 4.3, 35.)