Once upon a time, God visited Abram, a true follower of God. He then told him that he and his wife, Sarai, would one day be parents. Abram Questioned this, because he knew that they could not have children, because he and his wife are very old.
God also told him that he would have as many descendants as there are stars in the sky. God Then Changed Abrams's name to Abraham, which means "father of many". He also changed Sarai's name to to Sarah.
When Sarah heard this, they laughed, because they thought it would not happen.
Abraham and Sarah then had a child named Isaac, which means "laughter".