Siman 414

(8.) One asked him about the matter stated in the Shulchan Aruch [Orach Chaim 5] — to have intention when saying the Name of G-d etc. He replied: "And what is lacking to you as it is plain — 'Adonai, G-d'? For through saying this with simple, plain intention — one is compelled to have one's hands and feet and all 248 limbs and 365 sinews trembling." I also heard this from him myself — in the house of Rabbi N.N. in Uman, after the evening meal. And I remained alone with him after Birchas Hamazon. And he was sitting in... He sat in silence; afterward he answered and said in awe and fear: "Ga — ga — Got" [G-d]. That is, at first he trembled and shook to utter His Name Yisburach in completeness, and said only half the word because of the trembling and sweating. And afterwards there came forth from his holy mouth, in great awe and fear, the word "Got" [G-d] in completeness — like an arrow from the hand of a mighty man. And his plain intention was to implant in us the very awe of the Creator — Hashem Yisburach be His Name — for we are fitting for trembling and dread at the awe of His Name Yisburach, which fills all the world and stands over us always. And it is impossible to express this matter in writing. But one who understands and truly desires will understand from his intent many hints by this — to strengthen himself in complete faith in simplicity: to believe that "the whole earth is full of His glory," and that Hashem Yisburach is with us and beside us at all times. Set your mind well to these words in truth, until His awe and dread are drawn upon you: