Adam Clarke's Bible Commentary Verse 7. To give a light to him] To give him a descendant.
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 ולא3808 אבה14 יהוה3068 להשׁחית7843 את853 בית1004 דויד1732 למען4616 הברית1285 אשׁר834 כרת3772 לדויד1732 וכאשׁר834 אמר559 לתת5414 לו ניר5216 ולבניו1121 כל3605 הימים׃3117