The need to the imam [imam Mahdi (hgr)]
Professor Gharati:
As for swimming in the pool, one needs a coach and also a savior,
Passing the world, needs a ship and also a Capitan.
We have a narration in this regard, “«الدُّنیا بَحرٌ عَمیق»” which means the world is like a deep and turbulent sea