NET
15 Suppose a man has two wives, one whom he loves more than the other, and they both bear him sons, with the firstborn being the child of the less-loved wife.
Darby
15 If a man have two wives, one beloved, and one hated, and they have borne him children, both the beloved and the hated, and the firstborn son be hers that was hated;
KJV
15 If a man have two wives, one beloved, and another hated, and they have born him children, [both] the beloved and the hated; and [if] the firstborn son be hers that was hated: