8 Then Amaziah sent messengers to Jehoash the son of Jehoahaz, the son of Jehu, king of Israel, saying, "Come, let us face one another in battle." 9 And Jehoash king of Israel sent to Amaziah king of Judah, saying, "The thistle that was in Lebanon sent to the cedar that was in Lebanon, saying, 'Give your daughter to my son as wife'; and a wild beast that was in Lebanon passed by and trampled the thistle. 10 You have indeed defeated Edom, and your heart has lifted you up. Glory in that, and stay at home; for why should you meddle with trouble so that you fall--you and Judah with you?" 11 But Amaziah would not heed. Therefore Jehoash king of Israel went out; so he and Amaziah king of Judah faced one another at Beth Shemesh, which belongs to Judah. 12 And Judah was defeated by Israel, and every man fled to his tent. 13 Then Jehoash king of Israel captured Amaziah king of Judah, the son of Jehoash, the son of Ahaziah, at Beth Shemesh; and he went to Jerusalem, and broke down the wall of Jerusalem from the Gate of Ephraim to the Corner Gate--four hundred cubits. 14 And he took all the gold and silver, all the articles that were found in the house of the Lord and in the treasuries of the king's house, and hostages, and 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.