Following are a number of back-translations as well as a sample translation for translators of Genesis 17:23:

• Kankanaey: “And as for Abraham, he immediately obeyed what God had commanded to him. Because on that day, he circumcised Ismael and all his male slaves that were born in his house and all also that he had bought. On that very same day, Abraham also had-himself-circumcised, so they all were-at-the-same-time to be circumcised. Ninety and nine were the years of Abraham upon his being circumcised. Ismael also his child, he yeared ten and three.” (Source: Kankanaey Back Translation)
• Newari: “That day Abraham took his son Ishmael, all the servants who had been born in his house, as well as all the servants who had be bought and brought along, and all the men living in his house, and put the sign in [their] bodies like God had said.” (Source: Newari Back Translation)
• Hiligaynon: “At that very day, Abraham obeyed what- God -had-commanded him. He circumcised his child Ishmael and all the males in his household: slaves who were-born in his household and slaves whom he had-bought.” (Source: Hiligaynon Back Translation)
• English: “On that same day, Abraham took his son Ishmael and all the males that were in his household, including the sons of all the slaves he had bought, and circumcised them. He cut off their foreskins, just as God told him to do.” (Source: Translation for Translators)