Deuteronomy 21:16

到了把产业分给儿子承受的时候，不可将所爱之妻生的儿子立为长子，在所恶之妻生的儿子以上，

dào le bǎ chǎn yè fēn gěi ér zi chéng shòu de shí hòu ， bù kě jiāng suǒ ài zhī qī shēng de ér zi lì wèi zhǎng zǐ ， zài suǒ è zhī qī shēng de ér zi yǐ shàng ，

then it shall be, in the day that he causes his sons to inherit that which he has, that he may not give the son of the beloved the rights of the firstborn before the son of the hated, who is the firstborn;