GOD KEEPS HIS PROMISE, Dr. Samuel Lee
THE BIRTH OF ISAAC
Passage: Genesis 21:1~21  
Key verse: 2
The Birth of Isaac
21 Now the Lord was gracious to Sarah(A) as he had said, and the Lord did for Sarah what he had promised.(B) 2 Sarah became pregnant and bore a son(C) to Abraham in his old age,(D) at the very time God had promised him.(E) 3 Abraham gave the name Isaac[a](F) to the son Sarah bore him. 4 When his son Isaac was eight days old, Abraham circumcised him,(G) as God commanded him. 5 Abraham was a hundred years old(H) when his son Isaac was born to him.
6 Sarah said, “God has brought me laughter,(I) and everyone who hears about this will laugh with me.” 7 And she added, “Who would have said to Abraham that Sarah would nurse children? Yet I have borne him a son in his old age.”(J)
Hagar and Ishmael Sent Away
8 The child grew and was weaned,(K) and on the day Isaac was weaned Abraham held a great feast. 9 But Sarah saw that the son whom Hagar the Egyptian had borne to Abraham(L) was mocking,(M) 10 and she said to Abraham, “Get rid of that slave woman(N) and her son, for that woman’s son will never share in the inheritance with my son Isaac.”(O)
11 The matter distressed Abraham greatly because it concerned his son.(P) 12 But God said to him, “Do not be so distressed about the boy and your slave woman. Listen to whatever Sarah tells you, because it is through Isaac that your offspring[b] will be reckoned.(Q) 13 I will make the son of the slave into a nation(R) also, because he is your offspring.”
14 Early the next morning Abraham took some food and a skin of water and gave them to Hagar.(S) He set them on her shoulders and then sent her off with the boy. She went on her way and wandered in the Desert of Beersheba.(T)
15 When the water in the skin was gone, she put the boy under one of the bushes. 16 Then she went off and sat down about a bowshot away, for she thought, “I cannot watch the boy die.” And as she sat there, she[c] began to sob.(U)
17 God heard the boy crying,(V) and the angel of God(W) called to Hagar from heaven(X) and said to her, “What is the matter, Hagar? Do not be afraid;(Y) God has heard the boy crying as he lies there. 18 Lift the boy up and take him by the hand, for I will make him into a great nation.(Z)”
19 Then God opened her eyes(AA) and she saw a well of water.(AB) So she went and filled the skin with water and gave the boy a drink.
20 God was with the boy(AC) as he grew up. He lived in the desert and became an archer. 21 While he was living in the Desert of Paran,(AD) his mother got a wife for him(AE) from Egypt.
Footnotes
- Genesis 21:3 Isaac means he laughs.
- Genesis 21:12 Or seed
- Genesis 21:16 Hebrew; Septuagint the child
Cross references
- Genesis 21:1 : 1Sa 2:21
- Genesis 21:1 : S Ge 8:1; S 17:16, 21; 18:14; Gal 4:23; Heb 11:11
- Genesis 21:2 : S Ge 17:19; S 30:6
- Genesis 21:2 : Gal 4:22; Heb 11:11
- Genesis 21:2 : S Ge 18:10
- Genesis 21:3 : S Ge 16:11; S 17:19; Jos 24:3
- Genesis 21:4 : Ge 17:10, 12; Ac 7:8
- Genesis 21:5 : S Ge 12:4; Heb 6:15
- Genesis 21:6 : Ge 17:17; Job 8:21; Ps 126:2; Isa 12:6; 35:2; 44:23; 52:9; 54:1
- Genesis 21:7 : S Ge 17:17
- Genesis 21:8 : 1Sa 1:23
- Genesis 21:9 : S Ge 16:15
- Genesis 21:9 : Ge 39:14; Gal 4:29
- Genesis 21:10 : Ge 39:17
- Genesis 21:10 : Ge 25:6; Gal 4:30*
- Genesis 21:11 : Ge 17:18
- Genesis 21:12 : Mt 1:2; Ro 9:7*; Heb 11:18*
- Genesis 21:13 : ver 18; S Ge 13:16
- Genesis 21:14 : S Ge 16:1
- Genesis 21:14 : ver 31, 32; Ge 22:19; 26:33; 28:10; 46:1, 5; Jos 15:28; 19:2; Jdg 20:1; 1Sa 3:20; 1Ch 4:28; Ne 11:27
- Genesis 21:16 : Jer 6:26; Am 8:10; Zec 12:10
- Genesis 21:17 : Ex 3:7; Nu 20:16; Dt 26:7; Ps 6:8
- Genesis 21:17 : S Ge 16:7
- Genesis 21:17 : Ge 22:11, 15
- Genesis 21:17 : S Ge 15:1
- Genesis 21:18 : ver 13; S Ge 17:20
- Genesis 21:19 : Nu 22:31
- Genesis 21:19 : S Ge 16:7
- Genesis 21:20 : Ge 26:3, 24; 28:15; 39:2, 21, 23; Lk 1:66
- Genesis 21:21 : S Ge 14:6
- Genesis 21:21 : Ge 24:4, 38; 28:2; 34:4, 8; Jdg 14:2
Holy Bible, New International Version®, NIV® Copyright ©1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide.
Source:  BibleGateway
1. The Lord gave Isaac as he promised (1-6)
Now the Lord gave Isaac to Sarah at the very time God had promised. Abraham was 100 years old. Our God is God of the covenant. He is faithful to keep his promise no matter how impossible it looks to us. Abraham called him Isaac (Laughter) and circumcised him showing his obedience and thanks to God. God is Almighty! Sarah said, "God has brought me laughter, and everyone who hears about this will laugh with me." She praised God for his marvelous hands in having Isaac.
2. Get rid of Ishmael (8-21)
Now Isaac grew and had a feast to be weaned. But Sarah saw that Ishmael was mocking him. She asked Abraham to get rid of him. Abraham was reluctant because Ishmael was his son too. However, God says to listen to Sarah, because it is through Isaac that his offspring will be reckoned. God cannot accept what comes from our own good ideas but only by faith in God's promises. Abraham obeyed God absolutely. He got rid of Hagar and Ishmael. However, God saved the boy and blessed him to be a great nation too.
Prayer: Lord, thank you for bringing us laughter by keeping your promises in exact time. Help us to get rid of our Ishmael.
One Word: God brings us laughter