God called Sarah, too! We talk so much about God's call to Abraham that we can easily forget that God called Sarah as well. The story is told in Genesis 17. This old story begins with God's call to Abraham. It then moves to Sarah. "As for Sarah," God says, "she shall no longer be called Sarai but Sarah shall be her name." "I will bless her ..." God promises, "and she shall give rise to nations; kings of people shall come from her" (Genesis 17:16).

We can only imagine the solemnity of the moment when God made this promise to Abraham and Sarah. Abraham broke the solemnity. He fell on his face laughing at the very thought of God's promise. "Can a child be born to a man who is 100 years old?" Abraham laughed to himself. "Can Sarah, who is 90 years old, bear a child?" Abraham's laughter, it turns out, is the laughter of unbelief. He doesn't believe that God can keep this promise. The Lord has to scold Abraham a bit for his unseemly laughter. "No," God says firmly, "your wife shall bear you a son, and you shall name him Isaac" (Genesis 17:19). The Lord, it seems, also has a sense of humor. The name Isaac means: "he laughs."

Very soon thereafter the Lord visited Abraham in the guise of three messengers. Abraham and Sarah scurried around like mad making their home suitable for a visit from the Lord. They put on their finest spread. As the meal begins we hear that the Lord has made this appearance in order to speak with Sarah. "Where is Sarah your wife?" the Lord said to Abraham. Abraham had laughed off God's promise to Sarah. But the Lord perseveres. The Lord speaks the promise again in Sarah's hearing. "I will surely return to you in due season and your wife Sarah shall have a son" (Genesis 18:10).

This time it was Sarah who laughed. "After I have grown old, and my husband is old, shall I have pleasure?" she mused (Genesis 18:12). Sarah joined her husband in the laughter of unbelief. For the Lord, however, this was not a laughing matter. The Lord was angry with all this laughter of unbelief. "Is anything too wonderful for the Lord?" the Lord says in reprimand of Sarah's laughter. Sarah protested. "I did not laugh," she said to the Lord in fear. "Oh yes you did laugh," the Lord replied (Genesis 18:14-15).

Now a little laughter cannot dissuade the Lord. The Lord had made a promise to Sarah. The Lord kept that promise. The Lord means what the Lord says! Sarah did conceive and bear a son. What joy this son must have brought into the life of Abraham and Sarah! They named him "laughter," Isaac, as the one who promised had instructed them.

But we're not done with the laughing. Now it was Sarah's turn to laugh. "God has brought laughter for me; everyone who hears will laugh with me," Sarah said. "Who would ever have said to Abraham that Sarah would nurse children? Yet I have born him a son in his old age" (Genesis 21:6-7). Sarah's laughter here is clearly a sign of her faith. At least that's how the author of the book of Hebrews understands the story. Sarah's laughter has turned from the laughter of unbelief to the laughter of belief. She has heard the promise. She has conceived. She has given birth. She has believed it all. And she has laughed about it all. As Sarah is our witness, what better response can be given to this promise-making, promise-keeping Lord?