And I will come upon him while he [is] weary,.... With travelling, and with grief, and when endeavouring to get some rest by sleep, and so surprise him unawares, when not on his guard, and in no posture of defence:
and weak handed; while the number of men with him is small, and before the people from different parts can come to his assistance:
and will make him afraid; strike terror into him and his then, by surprising them suddenly in the night with such a number of men:
and all the people that [are] with him shall flee; one one way, and another another, for their own security, and leave David alone:
and I will smite the king only; dispatch him, and let the people flee without pursuing them.