The Birth of Isaac (vv. 1-7)
7 Similarities between the birth of Isaac and the birth of Jesus
a. Both were the promised seed and son. (Gen 3:15, 17:19, Gal 3:16)
b. Both had a period of delay between the promises given and their fulfillment.
(Gen 3:15, 15:3-6, Luk 2:7)
c. Both births were accompanied by a statement of God’s omnipotence
(Gen 18:14, Luke 1:37)
d. Both were given symbolic names, even before either was born. (Gen 17:19, Matt 1:21)
e. Both births occurred at an appointed time. (Gen 17:21, Gal 4:4)
f. Both births required a miracle. (Gen 18:11, Luke 1:31)
g. Both births were a matter of laughter and joy. (Gen 21:6, Luke 1:46-47, 2:10)
The Banishment of Ishmael (vv. 8-28)
5 Reasons for Ishmael’s Banishment
a. Ishmael’s Mocking (Gen 21:9, Gal 4:29)
b. Sarah’s Desire (Gen 21:10)
c. Ishmael’s Threat (Gen 21:10)
d. Abrahams’s Need (Gen 17:18, 22:2)
e. God’s Command (Gen 21:12)