What did the impotent man at the pool indicate?
The impotent man at the pool indicated a need for cleansing. Sin is mentioned alongside him, and his position next to the pool pointed to that requirement. This sets the stage for the deeper spiritual need illustrated by Lazarus, who had been dead four days.
Les explains that sin is mentioned, and the impotent man next to the pool indicated a need for cleansing. He then moves to Lazarus, who had been dead four days. Using 1 Peter's statement that a day is as a thousand years, Les sees the four days as indicating Israel has been spiritually dead for 4,000 years, going back to Abraham in 2,000 B.C. At the end of that period, Israel will be brought back to life.