ויבא נח ובניו ואשתו ונשי בניו אל התיבה מפני מי המבול (נח ז:ז)

The Mitteler Rav zt”l related what he heard from his father, The Sar Shalom of Belz zt”l, that his Rebbe, the Rebbe of Lublin zt”l once said: “You are a tzaddik” and added, “If someone were to tell me that I am a tzaddik I wouldn’t believe him. And even if Malachim – angels will tell me, I wouldn’t believe them. And if Hashem would tell me, I would only believe it for a second and not a second later.”

The Sar Shalom said that the Rebbe of Lublin explained the Rashi that says “אף נח מקטני אמנה’” – even Noach was from the ones who believe little in Hashem.  Since Hashem told Noach, “כי אותך ראיתי צדיק לפני בדור הזה” – for it is you who I have seen to be righteous before Me in this generation –  Noach believed what Hashem told him for only a second, but a second later he didn’t believe that he was still a tzaddik.