Thy Strong Word — Genesis 17:15-27. A disbelieving joy.

Rev. David Juhl, pastor of St. Peter’s Lutheran Church in Arlington, WI joins Rev. Brady Finnern to study Genesis 17:15-27.

Abraham and Sarah received the promise of a son. Being 90+ years old they were quick to laugh, but they still trusted the LORD (Romans 4:20). The sign of circumcision was a promise of being part of His family AND pointing us to the hope of the promised Messiah (Galatians 5:1-3). As Christians, we are sons of Abraham by faith in the Savior and therefore circumcision is no longer needed. By faith, we are counted righteous on account of Christ. Hard to believe, but what a joy. “Lord God, renew us in faith to see the old promises for Abraham always pointed to Christ. Renew us in faith to cling to Your resurrected Christ that we may be counted righteous. In His name, Amen”

Thy Strong Word reveals the light of our salvation in Christ through study of God’s Word, breaking our darkness with His redeeming light. Each weekday, two pastors fix our eyes on Jesus by considering Holy Scripture, verse by verse, in order to be strengthened in the Word and be equipped to faithfully serve in our daily vocations.

Thy Strong Word is hosted by Rev. Brady Finnern, pastor of Messiah Lutheran Church in Sartell, MN, and graciously underwritten by the Lutheran Heritage Foundation.

Genesis 17:15-27

Isaac’s Birth Promised

¹⁵And God said to Abraham, “As for Sarai your wife, you shall not call her name Sarai, but Sarah^[a] shall be her name. ¹⁶I will bless her, and moreover, I will give^[b] you a son by her. I will bless her, and she shall become nations; kings of peoples shall come from her.” ¹⁷Then Abraham fell on his face and laughed and said to himself, “Shall a child be born to a man who is a hundred years old? Shall Sarah, who is ninety years old, bear a child?” ¹⁸And Abraham said to God, “Oh that Ishmael might live before you!” ¹⁹God said, “No, but Sarah your wife shall bear you a son, and you shall call his name Isaac.^[c] I will establish my covenant with him as an everlasting covenant for his offspring after him. ²⁰As for Ishmael, I have heard you; behold, I have blessed him and will make him fruitful and multiply him greatly. He shall father twelve princes, and I will make him into a great nation. ²¹But I will establish my covenant with Isaac, whom Sarah shall bear to you at this time next year.”

²²When he had finished talking with him, God went up from Abraham. ²³Then Abraham took Ishmael his son and all those born in his house or bought with his money, every male among the men of Abraham’s house, and he circumcised the flesh of their foreskins that very day, as God had said to him. ²⁴Abraham was ninety-nine years old when he was circumcised in the flesh of his foreskin. ²⁵And Ishmael his son was thirteen years old when he was circumcised in the flesh of his foreskin. ²⁶That very day Abraham and his son Ishmael were circumcised. ²⁷And all the men of his house, those born in the house and those bought with money from a foreigner, were circumcised with him.

Read full chapter

Footnotes

Genesis 17:15 Sarai and Sarah mean princess
Genesis 17:16 Hebrew have given
Genesis 17:19 Isaac means he laughs

Rev. Brady Finnern

Rev. Brady Finnern, host of Thy Strong Word. is an expert in all things Minnesota, including hiking the great mountains of the 5th flattest state in the Union and making his own maple syrup. Although chow mein, fried ice cream, and Peanut Persian donuts with maple frosting are at the top of his foodie list, his prized possessions include his gas station refillable fountain soda cup (which, he says, the savings will pay for college for his 4 kids). Pastor Finnern's Divine Call is as President of the LCMS Minnesota North District, and in addition he also enjoys traveling, coaching track, and movie nights with his wife and kids that may or may not include Shawshank Redemption or any of the Thriller movies. When he's not singing his favorite hymns or listening to his favorite metal music, you might find him working out or taking naps. (Probably naps.)