We’re looking at laughter and bitterness by looking at a particular experience, and that is a woman laughing because her only child has been born. It’s an incredibly old woman we have here: a woman who’s 90 years old. We’re told in the Bible that this laughter is a clue to who God is and what he has done and how you find him. This passage is actually the key, because all of Abraham and Sarah’s lives and all of their fascinating incidents can be understood in terms of the name of their son. The name “Isaac” means laughter. You can understand all of their lives, and actually I think eventually you’ll be able to understand all of your life, through the word “laughter.” There’ve been three kinds of laughter in the story of Abraham and Sarah. They had to go through the first two to get to the third. Let’s look at these three kinds of laughter: 1) the laughter of scoffing, 2) the wild laughter of addiction and fixation, and 3) the laughter of grace. This sermon was preached by Dr. Timothy Keller at Redeemer Presbyterian Church on September 14, 1997. Series: Pointers to Christ – Directional Signs in History. Scripture: Genesis 21:1-7. Today's podcast is brought to you by Gospel in Life, the site for all sermons, books, study guides and resources from Timothy Keller and Redeemer Presbyterian Church. If you've enjoyed listening to this podcast and would like to support the ongoing efforts of this ministry, you can do so by visiting https://gospelinlife.com/give and making a one-time or recurring donation.