If anyone who isn't an Israelite wants to celebrate Passover with you, every man and boy in that family must first be circumcised. Then they may join in the meal, just like native Israelites. No uncircumcised man or boy may eat the Passover meal!
Eight days later Jesus' parents did for him what the Law of Moses commands. And they named him Jesus, just as the angel had told Mary when he promised she would have a baby.
God said to Abraham, “Every son in each family must be circumcised to show that you have kept your agreement with me.” So when Isaac was eight days old, Abraham circumcised him. Later, Isaac circumcised his son Jacob, and Jacob circumcised his twelve sons.