The tribe of Benjamin, originally the smallest of all the tribes Numbers 1:36, if Ephraim and Manasseh are reckoned as one tribe, had been nearly annihilated by the civil war recorded in Judges 20. It had of course not recovered from that terrible calamity in the time of Saul, and was doubtless literally much the smallest tribe at that time. Nothing could be more improbable, humanly speaking, than that this weak tribe should give a ruler to the mighty tribes of Joseph and Judah.

Am not I a Benjamite - This speech of Saul is exceedingly modest; he was now becomingly humble; but who can bear elevation and prosperity? The tribe of Benjamin had not yet recovered its strength, after the ruinous war it had with the other tribes, Judges 20:29-46.

And Saul answered and said, am not I a Benjamite,.... Or the son of Jemini, the name of one of his ancestors, see 1 Samuel 9:1 or rather, as the Targum, a son of the tribe of Benjamin:

of the smallest of the tribes of Israel? having been greatly reduced, even to the number of six hundred men, by the fatal war between that tribe and the rest, on account of the Levite's concubine, and is called little Benjamin, Psalm 68:27.

and my family the least of all the families of the tribe of Benjamin? the smallest in number, had the least share of authority in the tribe, and of land and cattle, wealth and substance:

wherefore then speakest thou so to me? Saul presently understood Samuel's meaning, that he should be chosen king of Israel, the affair of a king being at this time in everyone's mind and mouth; but could not believe that one of so small a tribe, and which sprung from the youngest son of Jacob, and of so mean a family, would be raised to such dignity, but that a person of great figure and character would be settled upon; and, therefore he took Samuel to be in joke, as Josephus (m) says, and not in earnest.

(m) Antiqu. l. 6. c. 4. sect. 1.

And Saul answered and said, Am not I a Benjamite, of the smallest of the tribes of Israel? and my family the least of all the families of the tribe of Benjamin? wherefore then speakest thou so to me?

9:21 The smallest - For so indeed this was, having been all cut off except six hundred, Judg 20:46 - 48, which blow they never recovered, and therefore they were scarce reckoned as an entire tribe, but only as a remnant of a tribe; and being ingrafted into Judah, in the division between the ten tribes and the two, they in some sort lost their name, and together with Judah were accounted but one tribe.

so...: Heb. according to this word

21. And Saul answered and said, Am not I a Benjamite, of the smallest of the tribes of Israel, &c.-By selecting a king from this least and nearly extinct tribe (Jud 20:46-48), divine wisdom designed to remove all grounds of jealousy among the other tribes.

9:18-27 Samuel, that good prophet, was so far from envying Saul, or bearing him any ill-will, that he was the first and most forward to do him honour. Both that evening and early the next morning, Samuel communed with Saul upon the flat roof of the house. We may suppose Samuel now convinced Saul that he was the person God had fixed upon for the government, and of his own willingness to resign. How different are the purposes of the Lord for us, from our intentions for ourselves! Perhaps Saul was the only one who ever went out to seek asses, and literally found a kingdom; but many have set out and moved their dwellings to seek riches and pleasures, who have been guided to places where they found salvation for their souls. Thus they have met with those who addressed them as if aware of the secrets of their lives and hearts, and have been led seriously to regard the word of the Lord. If this has been our case, though our worldly plans have not prospered, let us not care for that; the Lord has given us, or has prepared us for, what is far better.