SEV Biblia, Chapter 21:4
Y se levantó Joram contra el reino de su padre; y se hizo fuerte, y mató a cuchillo a todos sus hermanos, y asimismo a algunos de los príncipes de Israel.
Clarke's Bible Commentary - 2 Chronicles 21:4
Verse 4. Slew all his brethren] What a truly diabolic thing is the lust of power! it destroys all the charities of life, and renders those who are under its influence the truest resemblants of the arch fiend. That he might sit the more secure upon his throne, this execrable man imbrues his hands in the blood of his own brothers! There are more instances of this species of cruelty among bad Asiatic kings than among any other class of men. The history of every country abounds in proofs; even that of our own is not the least barren.
John Gill's Bible Commentary
Ver. 4. Now when Jehoram was risen up to the kingdom of his father , etc.] Succeeded him in it, and reigned alone, for he had reigned with his father some years before his death; (See Gill on “ 2 Kings 8:16”), he strengthened himself ; in the kingdom, by some means or another closely attaching the greater part of the princes, and people of the land, unto him, when he thought himself well settled and established on the throne; though some understand it of making strong, or hardening his heart to do what is next mentioned: and slew all his brethren with the sword ; either to get their riches into his hands, or lest, being religious princes, they should oppose his restoring idolatry, and for that reason the people should depose him, and set up one of them; and therefore he dispatched them out of the way to secure himself, and carry his point: and [divers] also of the princes of Israel ; such who had removed out of the ten tribes, for the sake of religion, and therefore would never agree to the introduction of idolatry among them, for which reason Jehoram slew them; and perhaps they might express their disapprobation and abhorrence of his murder of his brethren.
Matthew Henry Commentary
Verses 1-11 - Jehoram hated his brethren, and slew them, for the same reason tha Cain hated Abel, and slew him, because their piety condemned his impiety. In the mystery of Providence such men sometimes prosper for time; but the Lord has righteous purposes in permitting such events part of which may now be made out, and the rest will be seen hereafter.
Original Hebrew
ויקם 6965 יהורם 3088 על 5921 ממלכת 4467 אביו 1 ויתחזק 2388 ויהרג 2026 את 853 כל 3605 אחיו 251 בחרב 2719 וגם 1571 משׂרי 8269 ישׂראל׃ 3478