It devolved on Nebuzaradan to select for exemplary punishment the persons whom he regarded as most guilty, either in respect of the original rebellion or of the protracted resistance. Instead of taking indiscriminately the first comers, he first selected those who by their offices would be likely to have had most authority - the high priest; the second priest (2 Kings 23:4 note); three of the temple Levites; the commandant of the city; five members of the king’s Privy Council (or seven, see 2 Kings 25:19 note); and the secretary (or adjutant) of the captain of the host. To these he added sixty others, who were accounted “princes.” Compared with the many occasions on which Assyrian and Persian conquerers put to death hundreds or thousands after taking a revolted town, Nebuzaradan (and Nebuchadnezzar) must be regarded as moderate, or even merciful, in their vengeance. Compare Jeremiah 40:2-5.
The three keepers of the door - Rather, “three keepers.” The Hebrew has no article. The temple “door-keepers” in the time of Solomon numbered twenty-four 1 Chronicles 26:17-18, who were probably under six chiefs. After the captivity the chiefs are either six Ezra 2:42; Nehemiah 7:45 or four 1 Chronicles 9:17.