John Gills Exposition of the Bible Commentary - 2 Samuel 8:17
And Zadok the son of Ahitub, and Ahimelech the son of Abiathar, were the priests ,.... Not high priests, as Josephus F9 Ut supra, (Antiqu. l. 7. c. 5.) sect. 4. suggests, for there was only one high priest at a time; indeed there was a "sagan", or deputy priest, on occasion; and so Abarbinel says that Zadok was the high priest, and Ahimelech his second or deputy; but the truth of the case was this, Abiathar was high priest only, and continued so until the time of Solomon, when he was... read more
Matthew Henry's Complete Commentary - 2 Samuel 8:15-18
David was not so engaged in his wars abroad as to neglect the administration of the government at home. I. His care extended itself to all the parts of his dominion: He reigned over all Israel (2 Sam. 8:15); not only he had a right to reign over all the tribes, but he did so; they were all safe under his protection, and shared in the fruits of his good government. II. He did justice with an unbiased unshaken hand: He executed judgment unto all his people, neither did wrong nor denied or... read more