Chasidut su Geremia 17:78

And this is the hint [in] the prophet Yermiahu's command "do not bring out burdens from your houses on the day of Shabbat" (Jer. 17:22), look at this: according to one's behavior all the days of the week, in [having] clean thoughts during prayer, is the addition of extra holiness that Shabbat brings to one. And so to the opposite, God forbid, if one naughtily follows the ways of one's heart, in strange and disorganized thoughts, then on Shabbat all the thoughts of the days of the week, the extraneous and disgusting thoughts, God forbid, they close the gates of lucid prayers, the prayers of Israel, that is, they stand on the Higher gates and prevent the prayers [from entering] the gate of Israel. And this is what the prophet warned against: "do not bring out your burdens on the day of Shabbat", meaning, the strange thoughts that are like an enormous burden and are pass before the person on the day of Shabbat due to the fact that one thought about them in the days of the week and "passed them through the gates of Jerusalem", meaning, do not pass these prayers, marred with disgusting strange thoughts through the Higher gates, that they stand on the entrance of the gate and prevent the prayers of Israel to go up through the pathways of the gates. And how wouldn't one feel awe and great trembling in one's heart, being that one is a lowly human, [seeing] what one's transgression can cause to oneself and others!

Nachmanides quotes as a source for his explanation of the name Yovel a verse in Jeremiah, Ve-al yuval yishallach shorashav, “And its roots will be sent forth” (Jer. 17:8). Yovel is when spiritual roots spread out to return their offshoots home. Yovel’s nature is further reflected in its two defining laws.