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Texts -- Genesis 21:1-10 (NET)

Context
The Birth of Isaac
21:1 The Lord visited Sarah just as he had said he would and did for Sarah what he had promised . 21:2 So Sarah became pregnant and bore Abraham a son in his old age at the appointed time that God had told him. 21:3 Abraham named his son – whom Sarah bore to him– Isaac . 21:4 When his son Isaac was eight days old , Abraham circumcised him just as God had commanded him to do. 21:5 (Now Abraham was a hundred years old when his son Isaac was born to him.) 21:6 Sarah said , “God has made me laugh . Everyone who hears about this will laugh with me.” 21:7 She went on to say , “Who would have said to Abraham that Sarah would nurse children ? Yet I have given birth to a son for him in his old age !” 21:8 The child grew and was weaned . Abraham prepared a great feast on the day that Isaac was weaned . 21:9 But Sarah noticed the son of Hagar the Egyptian – the son whom Hagar had borne to Abraham – mocking . 21:10 So she said to Abraham , “Banish that slave woman and her son , for the son of that slave woman will not be an heir along with my son Isaac !”

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Expository Notes on the Bible (Constable)

  • The events recorded in Genesis stretch historically from Creation to Joseph's death, a period of at least 2500 years. The first part of the book (ch. 1-11) is not as easy to date precisely as the second part (ch. 12-50). The ...
  • Genesis provides the historical basis for the rest of the Bible and the Pentateuch, particularly the Abrahamic Covenant. Chapters 1-11 give historical background essential to understanding that covenant, and chapters 12-50 re...
  • The structure of Genesis is very clear. The phrase "the generations of"(toledotin Hebrew, from yaladmeaning "to bear, to generate") occurs ten times (really eleven times since 36:9 repeats 36:1), and in each case it introduce...
  • The Lord destroyed the corrupt, violent human race and deluged its world, but He used righteous Noah to preserve life and establish a new world after the Flood."Noah's experience presents decisively the author's assertion tha...
  • "The Babel account (11:1-9) is not the end of early Genesis. If it were, the story would conclude on the sad note of human failure. But as with earlier events in Genesis 1-11, God's grace once again supersedes human sin, insu...
  • One of the significant changes in the emphasis that occurs at this point in Genesis is from cursing in the primeval record to blessing in the patriarchal narratives. The Abrahamic Covenant is most important in this respect. H...
  • A major theme of the Pentateuch is the partial fulfillment of the promises to the patriarchs. The promises in Genesis 12:1-3 and 7 are the fountainhead from which the rest of the Pentateuch flows.397Walter Kaiser labeled the ...
  • "The function of this genealogy is not so much to connect Abraham with the preceding events, as the previous genealogies have done, but to provide the reader with the necessary background for understanding the events in the l...
  • "These verses are of fundamental importance for the theology of Genesis, for they serve to bind together the primeval history and the later patriarchal history and look beyond it to the subsequent history of the nation."414"W...
  • The second crisis Abram faced arose because of a famine in Canaan. Abram chose to sojourn in the Nile Valley until it was past. In this incident Abram tried to pass Sarai off as his sister because he feared for his life. By d...
  • The writer composed chapter 20 as another chiasm with the focal point being Abimelech warning his servants (v. 8). Two dialogues dominate the story: the one between God and Abimelech (vv. 3-7) and the one between Abimelech an...
  • The emphasis in this brief section is on the faithfulness and power of God in keeping His promise and providing an heir miraculously through Sarah (17:16; 18:14). Note the threefold repetition of "as He had said,""as He had p...
  • All was not well in Abraham's household. Ishmael was a potential rival to Isaac's inheritance. This section records another crisis in the story of Abraham's heir.Normally the son of a concubine became the heir of his mother b...
  • Abraham's purchase of a burial site in the Promised Land demonstrated his intention to remain in Canaan rather than going back to his native homeland. Since he was a sojourner in Canaan his friends probably expected him to bu...
  • Isaac would have been 75 years old and Jacob 15 when Abraham died (v. 7; cf. 21:5; 25:26).617"It is one thing to live a long life. It is another thing to live a long life that is also a happy life. This obituary notice about ...
  • A new toledotbegins with 25:19. Its theme is "the acquisition of the blessing and its development and protection by the Lord."625Moses set up the whole Jacob narrative in a chiastic structure that emphasizes the fulfillment o...
  • God prevented Isaac from leaving the Promised Land and renewed the covenant with him, but then He had to protect Rebekah when Isaac lied about his relationship with her to Abimelech."In the short span of one chapter, the writ...
  • Aalders, Gerhard Charles. Genesis. The Bible Student's Commentary series. 2 vols. Translated by William Heynen. Grand Rapids: Zondervan Publishing House, 1981.Aharoni, Yohanan, and Michael Avi-Yonah. The Macmillan Bible Atlas...
  • Israelite men could marry women from distant conquered cities taken as prisoners of war provided they did not already have a wife. Such a woman had to shave her head and cut her nails. These were rituals of purification custo...
  • The Book of Samuel covers the period of Israel's history bracketed by Samuel's conception and the end of David's reign. David turned the kingdom over to Solomon in 971 B.C.3David reigned for 40 and one-half years (2 Sam. 2:11...
  • 105:7-11 God remembered His people (v. 7, cf. v. 42) so His people should remember Him (v. 5). God had been faithful to the Abrahamic Covenant (Gen. 12:1-3, 7; 15:18-21; 22:15-18; 28:13-15). He made this covenant with Abraham...
  • Jesus concluded the Olivet Discourse with further revelation about the judgment that will take place at the end of the present age when He returns. He had referred to it often in the discourse, but now He made it a special su...
  • 1:28 The fact that Gabriel greeted Mary as he did and did not greet Zechariah the same way shows Mary's favored position. Gabriel's greeting was customary: Hail! or Greetings! (Gr. chaire). Mary was highly "favored"(Gr. kecha...
  • This is the second major song of praise in Luke, the "Benedictus."This title also comes from the first word in the Latin version translated "blessed"(Gr. eulogetos). The first part of the song praises God for messianic delive...
  • 8:48 Since the Jews could not refute Jesus' challenge they resorted to verbal abuse (cf. 7:52). Perhaps they called Him a Samaritan because He had questioned their ties to Abraham. This may have been a Samaritan attack agains...
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