2 Chronicles 21:3

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 21:3  (King James Version)
And their father gave them great gifts of silver, and of gold, and of precious things, with fenced cities in Judah: but the kingdom gave he to Jehoram; because he was the firstborn.

gave them
11:23 Genesis 25:6 ; Deuteronomy 21:15-17

the kingdom
He associated him with himself in the kingdom about three years before his death, and in the fifth year of Joram king of Israel; so that Jehoram reigned three years with his father, and five years alone, in all eight years.

"Jehoram made partner of the kingdom with his father, 1 Ki
8:16 ."