Genesis 49:16

"Dan will procure his people justice as one of the tribes of Israel. Let Dan become a serpent by the way, a horned adder in the path, that biteth the horse's heels, so that its rider falls back." Although only the son of a maid-servant, Dan would not be behind the other tribes of Israel, but act according to his name (ידין דּן), and as much as any other of the tribes procure justice to his people (i.e., to the people of Israel; not to his own tribe, as Diestel supposes). There is no allusion in these words to the office of judge which was held by Samson; they merely describe the character of the tribe, although this character came out in the expedition of a portion of the Danites to Laish in the north of Canaan, a description of which is given in Judg 18, as well as in the "romantic chivalry of the brave, gigantic Samson, when the cunning of the serpent he overthrew the mightiest foes" (Del.). שׁפיפן: κεράστης, the very poisonous horned serpent, which is of the colour of the sand, and as it lies upon the ground, merely stretching out its feelers, inflicts a fatal wound upon any who may tread upon it unawares (Diod. Sic. 3, 49; Pliny. 8, 23).

This chapter is a prophecy; the likest to it we have yet met with was that of Noah, Gen 9:25, etc. Jacob is here upon his death-bed, making his will. He put it off till now, because dying men's words are apt to make deep impressions, and to be remembered long: what he said here, he could not say when he would, but as the Spirit gave him utterance, who chose this time, that divine strength might be perfected in his weakness. The twelve sons of Jacob were, in their day, men of renown, but the twelve tribes of Israel, which descended and were denominated from them, were much more renowned; we find their names upon the gates of the New Jerusalem, Rev 21:12. In the prospect of this their dying father says something remarkable of each son, or of the tribe that bore his name. Here is, I. The preface (Gen 49:1, Gen 49:2). II. Th prediction concerning each tribe (v. 3-28). III. The charge repeated concerning his burial (Gen 49:29-32). IV. His death (Gen 49:33).

49:16-17 Dan was called to provide justice (Dan means “judge”), but the tribe would choose treachery, like a snake beside the road (see Judg 18).