10 This is my covenant between me and you, that you and your offspring* after you will keep: Every male among you must get circumcised.+

23 Abraham then took Ishʹma·el his son and all the men born in his house and everyone he had purchased with money, every male in the household of Abraham, and he circumcised the flesh of their foreskins on that very day, just as God had spoken with him.+

3 So Abraham got up early in the morning and saddled his donkey and took two of his servants along with him and his son Isaac. He split the wood for the burnt offering, and then he rose and traveled to the place that the true God indicated to him.

12 Then he said: “Do not harm the boy, and do not do anything at all to him, for now I do know that you are God-fearing because you have not withheld your son, your only one, from me.”+

8 By faith Abraham,+ when he was called, obeyed by going out to a place he was to receive as an inheritance; he went out, although not knowing where he was going.+

21 Was not Abraham our father declared righteous by works after he offered up Isaac his son on the altar?+