King James Version (KJV) - Deuteronomy 21:16 >

Then it shall be, when he maketh his sons to inherit [that] which he hath, [that] he may not make the son of the beloved firstborn before the son of the hated, [which is indeed] the firstborn:

Berean Study Bible (BSB) - Deuteronomy 21:16 >

when that man assigns his inheritance to his sons he must not appoint the son of the beloved wife as the firstborn over the son of the unloved wife.