2 Chronicles 21:14

Overview - 2 Chronicles 21
Jehoram, succeeding Jehoshaphat, slays his brethren.
His wicked reign.
Edom and Libnah revolt.
12 The prophecy of Elijah against him in writing.
16 Philistines and Arabians oppress him.
18 His incurable disease, infamous death, and burial.
Treasury of Scripture Knowledge

2 Chronicles 21:14  (King James Version)
Behold, with a great plague will the LORD smite thy people, and thy children, and thy wives, and all thy goods:

Hebrew stroke.
Leviticus 26:21

thy people
Many of the people had concurred in Jehoram's idolatry, and some of them must have been instruments in his base, unnatural murders; they were therefore joined in his punishment, and he suffered by the loss of his subjects.
Hosea 5:11 ; Micah 6:16

thy children
Exodus 20:5