Sign Up For A Daily Bible Question Straight To Your Inbox! Name: Email: We respect your email privacy Please Like and Share our Site: Bible Quiz The Bible Quiz - How old was Yitzchak (Isaac) when he was circumcised? Topic Q 240 Question 1 of 1 Vayeira Score of 60 How old was Yitzchak (Isaac) when he was circumcised? 30 days old 1 year old 13 years old 8 days old Menu Click For Source Bereishit 21:4 87 people have so far answered this question That is correct26.4367816092% of people got this wrong. That is not correctOnly 73.5632183908% of people got it right.