The Power of a Sincere Sigh
Once, there was a grievous sinner at the tisch of Rav Mordechai of Chernobyl. At one point, the sinner let out a great sigh, and the Chernobler Maggid declared, “Whoever does not believe that when a Jew sighs and repents Hashem immediately accepts him is a heretic!”
Likutim Yekarim