Question 1

What is the significance of circumcision in God’s covenant with Abraham?

Accepted Answer

In this passage, circumcision is the outward sign God chooses for His covenant with Abraham and his descendants. It is not the covenant itself, but a mark that points to God’s promise of grace and to their duty to walk before Him. It is done in the flesh to show that what comes from human nature is sinful and needs cleansing. By bearing this sign, Abraham’s household is publicly set apart as God’s people. Refusing circumcision meant despising God’s sign and promise, and so brought the warning of being cut off from the people.

Question 2

Why did God command circumcision on the eighth day for baby boys?

Accepted Answer

God tells Abraham that every male eight days old must be circumcised. The passage itself gives the timing but not a long explanation. From the wider teaching around it, we see that this early timing shows God’s fatherly care, bringing children into the covenant community from the very start of life. It keeps the sign from being delayed or forgotten and makes clear that belonging to God is not first about what the child does, but about God’s promise. The eighth day also hints at a new beginning, a fresh start under God’s covenant mercy.

Question 3

Why was an uncircumcised male to be cut off from his people?

Accepted Answer

God says that any male who refuses circumcision has broken His covenant and “that soul shall be cut off from his people.” This sounds hard, but it shows how serious God’s covenant is. Circumcision was the sign God Himself chose. To treat the sign as nothing was to treat God’s promise as nothing. It was open rejection of being part of His covenant people. Being cut off meant losing the privileges of the community that lived under God’s promise. This warning was meant to keep the people from carelessness and to urge parents and leaders to be faithful in teaching and obedience.

Question 4

Why did God change Sarai’s name to Sarah and what did He promise her?

Accepted Answer

In this passage God tells Abraham not to call his wife Sarai anymore, but Sarah. With the new name He joins a fresh promise. He says He will bless her, give Abraham a son by her, and make her a mother of nations, with kings coming from her line. This makes clear that the promised heir will not come through another woman, but through Sarah herself, even though she is old. The name change shows God claiming her for this purpose and lifting her up in His plan, not just as Abraham’s wife but as a key part of the covenant story.

Question 5

Why did Abraham laugh when God promised a son through Sarah?

Accepted Answer

Abraham falls on his face and laughs when he hears that he, at a hundred, and Sarah, at ninety, will have a child. This laughter is not mockery of God, but a sudden mix of joy and wonder at something that seems humanly impossible. Inside he asks how this can be, yet elsewhere he is described as not staggering in unbelief. His reaction shows how God’s promises can be far beyond what we can picture. It also helps explain why the son is named Isaac, which means something like “he laughs,” reminding them how God turned their amazement into fulfilled joy.

Question 6

If God blessed Ishmael, why is the covenant established with Isaac instead?

Accepted Answer

Abraham asks that Ishmael might live before God, showing his love and concern for his first son. God answers kindly. He says He has heard Abraham, will bless Ishmael, make him fruitful, and bring from him twelve princes and a great nation. Yet God clearly states that His special covenant will be with Isaac, the son to be born from Sarah at a set time next year. Ishmael receives real earthly blessings, but Isaac is the child through whom the covenant line and its everlasting promise will run. This shows God’s free choice in how He carries out His saving plan.

Question 7

Why are servants and foreigners in Abraham’s house included in circumcision?

Accepted Answer

God commands that not only Abraham’s own sons, but every male born in his house or bought with his money must be circumcised. This means servants and foreigners living under his roof share in the covenant sign. It shows that God’s grace is not limited to one bloodline only, but reaches all who are gathered into the household of faith. Abraham is responsible to lead everyone under his care in obedience to God. This also points ahead to a wider welcome, where people from outside the original family are brought into God’s people through His promised seed.

Question 8

What does it mean that God’s covenant with Abraham and Isaac is everlasting?

Accepted Answer

God calls His covenant with Abraham and with Isaac and Isaac’s seed an everlasting covenant. This does not mean the physical act of circumcision will go on without change in every age, but that the grace and promise behind it do not end. God is binding Himself to be God to Abraham’s true offspring forever. The outward sign later gives way to new signs, but the heart of the covenant, God taking a people for Himself and forgiving and renewing them through the promised offspring, remains. The word “everlasting” keeps our eyes on God’s unchanging faithfulness.

Question 9

How does Abraham show obedience and faith at the end of this passage?

Accepted Answer

At the close of the passage, Abraham does not delay or argue. He takes Ishmael, all born in his house, and all bought with his money, and circumcises every male that very same day, just as God had said. He even submits to circumcision himself at ninety-nine years old. This quick and costly obedience shows that Abraham trusts God’s word and yields his whole household to Him. His example teaches that real faith does not stay in the mind only, but moves the hands and feet. When God speaks, faith responds by doing what He commands.

Question 10

How can this passage about circumcision and covenant speak to believers today?

Accepted Answer

Today, the exact ceremony of circumcision as a covenant sign is not commanded in the same way, but the truths behind it still matter. God still takes the first step in making a people His own, still uses outward signs to strengthen weak hearts, and still calls for a response of faith and obedience. The picture of circumcision reminds us that sin runs deep in human nature and that we need God to cleanse and change us. The household aspect urges parents and leaders to care for the spiritual life of those under them. Above all, it points us to trust the promised offspring through whom God’s everlasting covenant is fulfilled.

Genesis 17:9

¶ And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations.

The Covenant of Circumcision

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Genesis 17:9

¶ And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations.

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The Covenant of Circumcision

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