10 In the thirty-seventh year of Joash king of Judah began Jehoash the son of Jehoahaz to reign over Israel in Samaria, (and reigned) sixteen years.
*Minor differences ignored. Grouped by changes, with first version listed as example.
In the thirty and seventh year - Joash, the son of Jehoahaz, was associated with his father in the government two years before his death. It is this association that is spoken of here. He succeeded him two years after, a little before the death of Elisha. Joash reigned sixteen years, which include the years he governed conjointly with his father. - Calmet.
In the thirty and seventh year of Joash king (g) of Judah began Jehoash the son of Jehoahaz to reign over Israel in Samaria, [and reigned] sixteen years.
(g) His chief purpose is to describe the kingdom of Judah, and how God performed his promise made to the house of David: but in the process he shows how Israel was afflicted and punished for their great idolatry, who though they had now degenerated, yet God both by sending them many prophets and various punishments, called them to him again.
In the thirty and seventh year of Joash king of Judah, began Jehoash the son of Jehoahaz to reign over Israel in Samaria,.... But inasmuch as his father began to reign in the twenty third of Joash, and reigned seventeen years, 2-Kings 13:1 this king must begin to reign in the thirty ninth or fortieth of Joash; for the reconciling of which it may be observed, that two of the years of his reign may be supposed to be imperfect; or rather that his son reigned two or three years in his lifetime, being raised up before his father's death to be a saviour of Israel from the Syrians; and so his father lived to see his prayer answered, 2-Kings 13:4,
and reigned sixteen years.
Jehoash, the king, came to Elisha, to receive his dying counsel and blessing. It may turn much to our spiritual advantage, to attend the sick-beds and death-beds of good men, that we may be encouraged in religion by the living comforts they have from it in a dying hour. Elisha assured the king of his success; yet he must look up to God for direction and strength; must reckon his own hands not enough, but go on, in dependence upon Divine aid. The trembling hands of the dying prophet, as they signified the power of God, gave this arrow more force than the hands of the king in his full strength. By contemning the sign, the king lost the thing signified, to the grief of the dying prophet. It is a trouble to good men, to see those to whom they wish well, forsake their own mercies, and to see them lose advantages against spiritual enemies.
Reign of Jehoash or Joash of Israel. - On the commencement of his reign see at 2-Kings 13:1. He also walked in the sins of Jeroboam (compare 2-Kings 13:11 with 2-Kings 13:2 and 2-Kings 13:6). The war with Amaziah referred to in 2-Kings 13:12 is related in the history of this king in 2-Kings 14:8-14; and the close of the reign of Joash is also recorded there (2-Kings 14:15 and 2-Kings 14:16) with the standing formula. And even here it ought not to be introduced till the end of the chapter, instead of in 2-Kings 13:12 and 2-Kings 13:13, inasmuch as the verses which follow relate several things belonging to the reign of Joash. But as they are connected with the termination of Elisha's life, it was quite admissible to wind up the reign of Joash with 2-Kings 13:13.
*More commentary available at chapter level.