What Really Destroys a Wall? A Reflection on Unity (17th of Tammuz)

Engineers have discovered a secret about how walls and bridges collapse. It never happens all at once. It starts with a tiny crack so small you can't even see it. And if it's not addressed, it slowly and quietly spreads day after day until it reaches a critical point and then the entire structure collapses all at once. It wasn't the hammer from the outside that brought down the wall, but the crack from within that no one took care of. And today, on the 17th of Tamuz, we remember that the walls of Jerusalem were breached. But let's admit the painful truth. Our sages said that the temple wasn't destroyed because of the enemy outside, but from within, from baseless hatred, from the small cracks between us. An insult that wasn't forgiven, a quarrel that wasn't resolved, a separation that quietly grew. The enemy only pushed against the cracked wall. The Gimara in Yoma states explicitly that the second temple was destroyed because of baseless hatred and therefore the solution isn't in the bricks but in the cracks. Unconditional love to mend what has cracked between us before it spreads. Every insult that is forgiven is a repair of a crack before it brings down the wall. Science has proven that a small crack can bring down a great wall. Our sages knew that even a small division can destroy a home. The Holy One, blessed be He, is not waiting for us to fight the enemy outside. He asks that we mend the crack within. Let's not wait for the wall to fall. Let's mend the cracks between us.