8 Then Amaziah sent messengers to King Jehoash son of Jehoahaz, son of Jehu, of Israel, saying, "Come, let us look one another in the face." 9 King Jehoash of Israel sent word to King Amaziah of Judah, "A thornbush on Lebanon sent to a cedar on Lebanon, saying, "Give your daughter to my son for a wife'; but a wild animal of Lebanon passed by and trampled down the thornbush. 10 You have indeed defeated Edom, and your heart has lifted you up. Be content with your glory, and stay at home; for why should you provoke trouble so that you fall, you and Judah with you?" 11 But Amaziah would not listen. So King Jehoash of Israel went up; he and King Amaziah of Judah faced one another in battle at Beth-shemesh, which belongs to Judah. 12 Judah was defeated by Israel; everyone fled home. 13 King Jehoash of Israel captured King Amaziah of Judah son of Jehoash, son of Ahaziah, at Beth-shemesh; he came to Jerusalem, and broke down the wall of Jerusalem from the Ephraim Gate to the Corner Gate, a distance of four hundred cubits. 14 He seized all the gold and silver, and all the vessels that were found in the house of the Lord and in the treasuries of the king's house, as well as hostages; then he returned to Samaria.

Matthew Henry's Commentary on 2 Kings 14:8-14

Commentary on 2 Kings 14:8-14

(Read 2 Kings 14:8-14)

For some time after the division of the kingdoms, Judah suffered much from the enmity of Israel. After Asa's time, it suffered more by the friendship of Israel, and by the alliance made with them. Now we meet with hostility between them again. How may a humble man smile to hear two proud and scornful men set their wits on work, to vilify and undervalue one another! Unholy success excites pride; pride excites contentions. The effects of pride in others, are insufferable to those who are proud themselves. These are the sources of trouble and sin in private life; but when they arise between princes, they become the misery of their whole kingdoms. Jehoash shows Amaziah the folly of his challenge; Thine heart has lifted thee up. The root of all sin is in the heart, thence it flows. It is not Providence, the event, the occasion, whatever it is, that makes men proud, secure, discontented, or the like, but their own hearts do it.