Following are a number of back-translations as well as a sample translation for translators of Genesis 17:25:

• 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: “And his son, Ishmael was 13 years old.” (Source: Newari Back Translation)
• Hiligaynon: “and Ishmael himself was- 13 years -of-age.” (Source: Hiligaynon Back Translation)
• English: “and Ishmael was thirteen years old when Abraham circumcised him.” (Source: Translation for Translators)