9 Jehoiachin was eight years old when he began to reign; and he reigned three months and ten days in Jerusalem: and he did that which was evil in the sight of Yahweh.
*Minor differences ignored. Grouped by changes, with first version listed as example.
Eight years old - Rather, eighteen (see the marginal reference). Jehoiachin had several wives and (apparently) at least one child Jeremiah 22:28, when, three months later, he was carried captive to Babylon.
Jehoiachin was eight - See on 2-Kings 24:6-15 (note).
Jehoiachin [was] (e) eight years old when he began to reign, and he reigned three months and ten days in Jerusalem: and he did [that which was] evil in the sight of the LORD.
(e) That is, he began his reign at eight years old, and reigned ten years when his father was alive, and after his father's death, which was in his eighteenth year, he reigned alone three months and ten days.
Jehoiachin was eight years old--called also Jeconiah or Coniah (Jeremiah 22:24) --"eight" should have been "eighteen," as appears from 2-Kings 24:8, and also from the full development of his ungodly principles and habits (see Ezekiel 19:5-7). His reign being of so short duration cannot be considered at variance with the prophetic denunciation against his father (Jeremiah 36:30). But his appointment by the people gave umbrage to Nebuchadnezzar, who, "when the year was expired" (2-Chronicles 36:10) --that is, in the spring when campaigns usually began--came in person against Jerusalem, captured the city, and sent Jehoiachin in chains to Babylon, removing at the same time all the nobles and most skilful artisans, and pillaging all the remaining treasures both of the temple and palace (see on 2-Kings 24:8-17).
The reign of Jehoiachin. Cf. 2-Kings 24:8-17. - Jehoiachin's age at his accession is here given as eight years, while in 2-Kings 24:8 it is eighteen. It is so also in the lxx and Vulg.; but a few Hebr. codd., Syr., and Arab., and many manuscripts of the lxx, have eighteen years in the Chronicle also. The number eight is clearly an orthographical error, as Thenius also acknowledges. Bertheau, on the contrary, regards the eight of our text as the original, and the number eighteen in 2 Kings as an alteration occasioned by the idea that eighteen years appeared a more fitting age for a king than eight years, and gives as his reason, "that the king's mother is named along with him, and manifestly with design, 2-Kings 24:12, 2-Kings 24:15, and Jeremiah 22:26, whence we must conclude that she had the guardianship of the young king." A perfectly worthless reason. In the books of Kings the name of the mother is given in the case of all the kings after their accession has been mentioned, without any reference to the age of the kings, because the queen-mother occupied a conspicuous position in the kingdom. It is so in the case of Jehoiakim and Jehoiachin, 2-Kings 23:36 and 2-Kings 24:8. On account of her high position, the queen-mother is mentioned in 2-Kings 24:12 and 2-Kings 24:15, and in Jeremiah, among those who submitted to Nebuchadnezzar and were carried away to Babylon. The correctness of the number eighteen is, however, placed beyond doubt by Ezekiel 19:5-9, where the prophet portrays Jehoiachin as a young lion, which devoured men, and knew widows, and wasted cities. The knowing of widows cannot apply to a boy of eight, but might well be said of a young man of eighteen. Jehoiachin ruled only three months and ten days in Jerusalem, and did evil in the eyes of Jahve. At the turn of the year, i.e., in spring, when campaigns were usually opened (cf. 1-Kings 20:22; 2-Samuel 11:1), Nebuchadnezzar sent his generals (2-Kings 24:10), and brought him to Babylon, with the goodly vessels of the house of Jahve, and made his (father's) brother Zedekiah king in Judah. In these few words the end of Jehoiachin's short reign is recorded. From 2-Kings 24:10-16 we learn more as to this second campaign of Nebuchadnezzar against Jerusalem, and its issues for Judah; see the commentary on that passage. Zidkiyah (Zedekiah) was, according to 2-Kings 24:17, not a brother, but דּוד, uncle or father's brother, of Jehoiachin, and was called Mattaniah, a son of Josiah and Hamutal, like Jehoahaz (2-Kings 24:18, cf. 2-Kings 23:31), and is consequently his full brother, and a step-brother of Jehoiakim. At his appointment to the kingdom by Nebuchadnezzar he received the name Zidkiyah (Zedekiah). אהיו, in 2-Chronicles 36:10, is accordingly to be taken in its wider signification of blood-relation.
*More commentary available at chapter level.