But being overborne with numbers, and nobody daring to face about, stretching out his hands to heaven, [Romulus] prayed to Jupiter to stop the army, and not to neglect but maintain the Roman cause, now in extreme danger. The prayer was no sooner made, than shame and respect for their king checked many; the fears of the fugitives changed suddenly into confidence.

Plutarch's Lives of Illustrious Men: Corrected from the Greek and Revised (ed. 1876)