NET
21 So King Joash of Israel attacked. He and King Amaziah of Judah faced each other on the battlefield in Beth Shemesh of Judah.
Darby
21 And Joash king of Israel went up; and they looked one another in the face, he and Amaziah king of Judah, at Beth-shemesh, which is in Judah.
KJV
21 So Joash the king of Israel went up; and they saw one another in the face, [both] he and Amaziah king of Judah, at Bethshemesh, which [belongeth] to Judah.