Mwanzo 17 : 13 Genesis chapter 17 verse 13

Mzaliwa nyumbani mwako, na mnunuliwa kwa fedha yako, lazima atahiriwe; na agano langu litakuwa katika mwili wenu, kuwa agano la milele.
soma Mlango wa 17

He who is born in your house, and he who is bought with your money, must be circumcised. My covenant will be in your flesh for an everlasting covenant.