God had previously promised Abraham that Sarah would bear a son, despite their old age.
Fulfillment
complete
Fulfilled in
Genesis 21:1-2
The prophecy is fulfilled when Sarah gives birth to Isaac, as God had promised Abraham in Genesis 17:19.
Theological significance
This fulfillment demonstrates God's faithfulness to His promises and His power to bring about His will despite human limitations. It also sets the stage for the Abrahamic covenant and the lineage through which the Messiah would come.
God reassures Abraham that, despite sending Hagar and Ishmael away, His covenant will be established through Isaac.
Fulfillment
complete
Fulfilled in
Genesis 25:19-26
Isaac becomes the father of Jacob, who is later named Israel, and through him, the twelve tribes of Israel are established.
Theological significance
This prophecy underscores the theme of election and God's sovereign choice in the lineage of His people. It also highlights the importance of faith and obedience in God's plan.