When Abigail saw David, she hurried, and alighted from her donkey, and fell before David on her face, and bowed herself to the ground.
"You enemies shall he (God) sling out as from the hollow of a sling"  (1 Samuel 25:29).  What a diplomatic reference this was!  It was a sling, of course, that brought David to the attention of all Israel in his triumph over Goliath.