Sefer Chasidim Siman 1156
Can copy this into an AI, or connect the whole library to your assistant. For deeper learning, you can directly use the original seforim, sites, and apps.
למה ידע נבוכדנצר וכמצבייה עביד בחיל שמיא לפי שהחליף שרי מעלה בחרבן הבית שלא יוכלו להשביען:
Medieval Jewish mysticism, translated by Sholom Alchanan Singer. Northbrook, Ill. Whitehall Co., 1971
Why did Nevuchadnezar succeed and the host of heaven did according to his will? Because Hashem changed names of angels during the Temple's destruction in order to prevent their invocation.