Genesis 21:1–7 (ESV)
The Birth of Isaac
Lord visited Sarah as he had said, and the Lord did to Sarah as he had promised. 2 And Sarah conceived and bore Abraham a son in his old age at the time of which God had spoken to him. 3 Abraham
called the name of his son who was born to him, whom Sarah bore him, Isaac. 4 And Abraham circumcised his son Isaac when he was eight days old, as God had commanded him. 5 Abraham was a hundred
years old when his son Isaac was born to him. 6 And Sarah said, “God has made laughter for me; everyone who hears will laugh over me.” 7 And she said, “Who would have said
to Abraham that Sarah would nurse children? Yet I have borne him a son in his old age.”
Twenty-five years after the promise was given, a child
is born to Abraham and Sarah. His name is Isaac, “he laughs,” calling to mind the past laughter of his parents and describing their joy upon his birth. The parents needed patience and faith as those 25 years came and went. How impatient we can
become when things do not go as we think they should, even over short periods of time, even when God has clearly promised that all things will work together for good. But God is faithful, even when our patience and faith fall short. He has delivered the greatest
of His promises, to give salvation and everlasting life to all who believe in the Lord Jesus.
I pray: Heavenly Father, keep
us patient and faithful while You carry out Your plan for our lives and our salvation. Amen.
E. A. (2009). The Lutheran Study Bible (p. 46). St. Louis, MO: Concordia Publishing House.