We know that if you put a seed in the ground, it will germinate, grow and bear fruit. but how that works, is a mystery. We just know it happens. Jesus is saying the Kingdom of Heaven is like that. We do not really know how it grows or when god will bring it. We are helpless to usher it in and helpless to hinder it. It is God's kingdom and His will determines its arrival.
This message will encourage you to "stay in the game," and what to do while waiting.