If you’ve read Genesis before, you know that Abraham’s son’s name, Isaac, means laughter. And if you had asked me where that came from, I would have said, Isaac’s mother, Sarah, laughed when promised that she would bear a son at age 90:

The LORD said, “I will surely return to you about this time next year, and Sarah your wife shall have a son.” And Sarah was listening at the tent door behind him. Now Abraham and Sarah were old, advanced in years. The way of women had ceased to be with Sarah. So Sarah laughed to herself, saying, “After I am worn out, and my lord is old, shall I have pleasure?” The LORD said to Abraham, “Why did Sarah laugh and say, ‘Shall I indeed bear a child, now that I am old?’” (Genesis 18.10 – 13, ESV)

But Sarah wasn’t the first to laugh. Back in Genesis 17, God changed Sarai’s name to Sarah and promised (again) that she would bear a son:

And God said to Abraham, “As for Sarai your wife, you shall not call her name Sarai, but Sarah shall be her name. I will bless her, and moreover, I will give you a son by her. I will bless her, and she shall become nations; kings of peoples shall come from her.” Then Abraham fell on his face and laughed and said to himself, “Shall a child be born to a man who is a hundred years old? Shall Sarah, who is ninety years old, bear a child?” Genesis 17.15 – 17, ESV, emphasis mine)

They both laughed in unbelief. But there’s a lesson there, too. Stay tuned.

And Zechariah said to the angel, “How shall I know this? For I am an old man, and my wife is advanced in years.” And the angel answered him, “I am Gabriel. I stand in the presence of God, and I was sent to speak to you and to bring you this good news. And behold, you will be silent and unable to speak until the day that these things take place, because you did not believe my words, which will be fulfilled in their time.” (Luke 1.18 – 20, ESV)