Man must be conscious of this immense power. He must realize that all his actions are charged with serious consequences.

The Baal Shem Tov thus cautions: "Excessive humility may cause man to go astray from the service of G‑d! Because of a sense of self-deprecation he does not believe that man can bring about a Divine effluence to all worlds by means of prayer and Torah. Indeed, even the angels are sustained by virtue of man's Torah and prayers. If man would sincerely believe this, he would serve G‑d with joy and gladness of the heart more than for anything else, and he would be careful with every letter, motion and word to express these in ideal fashion.

"He must realize that he is a `ladder set on the earth, and its head reaches into heaven': all his motions, his speech, his conduct and involvements, leave impressions in the uppermost realms. Thus he must be careful that all these be for the sake of Heaven.

In turn, if man thinks, `who am I that I could blemish or correct anything above or below, that my doings will leave a mark above' - this will cause him to follow the inclinations of his heart, thinking that he has nothing to worry about.

"In truth, however, the good deeds of man cause him to be literally attached to G‑d, as it is written, `You shall walk in His ways' (Deuteronomy 28:9). Thus when he is compassionate below, the Supernal attribute of compassion is stirred Above, in all worlds. This is the concept of `Know what is Above mimach (from you)' (Avot2:1) - i.e., from you yourself you can know it: from the attribute aroused within you, you know that it is likewise Above." (Keter Shem Tov, sect. 145. See also Tzava'at Harivash, sect. 142, interpreting: "Know that what is Above - mimcha i.e., it is from and through you." In other words, man's actions below determine corresponding Heavenly reactions.