Who we'll see in heaven

Today on the way to school, Ben started asking questions about heaven. He asked when different people were going to die and I told him that only God knows when we'll die. He sat there thinking for a minute and then said to Heidi, "You what will be great Heidi? We'll even get to see David in heaven." Heidi just gave him a blank stare. "Come on Heidi, you know David, he killed Goliath, you remember! He'll be in heaven because he loved God, but not Goliath!"