Why is the healing of the blind man in John 9 directed to Israel?
The healing of the blind man in John 9 is directed to Israel because it signified her spiritual blindness and near-term rejection, while pointing to God's long-term promise to cleanse and forgive her. The pool of Siloam and Zechariah's fountain of cleansing for sin and uncleanness picture Israel's future kingdom restoration.
Les explains that the healing of the blind man in John 9 is a sign directed to the nation of Israel. The man had been blind since birth until the Messiah came, and he washed in the pool of Siloam and came seeing. This pictured Israel's spiritual blindness and her near-term rejection and falling away from all her prospects. Yet in the long term, God will still fulfill all the sign aspects of His dealing with Israel. Les points to Zechariah 13:1, where in the day the Lord sets up His kingdom and Israel has all promises fulfilled, a fountain will be opened to the house of David and the inhabitants of Jerusalem for sin and uncleanness. God will cleanse and forgive them, and they will come into all the glory of the kingdom. As yet, Israel remains in spiritual blindness.