Both Abraham and Sarah laughed when the angel announced that, they were to have a son when Abraham was 100 years old, and Sarah was 90. (Gen. 18:16–21:7) We can note from the account that Abraham was not rebuked for his laughing, but Sarah was, which she even tried to deny. Therefore, there is no reason to see Abraham’s laughter as nothing more than that of joy, for he was finally going to have a son with his beloved Sarah. However, Sarah’s laughter was something more, as she saw this amazing prospect as humorous. In other words, the idea of having a child at the age of 90, when she had been barren all these years, struck her as funny. Maybe she was picturing her 90-year-old body being nine months pregnant and what she would have looked like. However, no one can rightfully look at the account, and come away with either Abraham or Sarah laughing because of contempt, disrespect, or deliberate sarcasm as both are recorded as demonstrating faith in the promise God made. ― Romans 4:18-22; Hebrews 11:1, 8-12.