He's a standard literary device that you see in fables of this period, and later--the kind that you find for example in the fables of Aesop.

它只是当时在传说中，不可缺少的角色，你可以在随后的伊索寓言中，找到类似的例子。

耶鲁公开课 - 旧约导论课程节选