500
From "The Giver" chapter 13:
"'Giver,' he asked...'what causes pain? Oh, I remember the sunburn you gave me on the very first day. But that wasn't so terrible. What is it that makes you suffer so much?' The Giver nodded. 'Lie down,' he said. 'It's time, I suppose.'"
From this passage, we can infer that the Giver is going to_________.
Give more painful memories to Jonas so he can experience pain.