Likutei Moharan 138:1/ליקוטי מוהר"ן קל״ח:א׳

1“L’kha Amar Lee’bee (On Your behalf my heart has said), ‘Seek My countenance.’” (Psalms 27:8)

2Rashi explains: As your emissary.

3The essence of Godliness is in the heart, as it is written (Psalms 73:26), “[God] is the rock of my heart.” This has been explained elsewhere.

4Now, someone who is of “a pure heart” (ibid. 24:4)—as in, “and my heart is hollow within me” (ibid. 109:22)—can know future events through that which his heart tells him. For these are the words of God, literally.

5This is the meaning of: “On Your behalf my heart has said, ‘Seek My countenance.’”

6On Your behalf— As Your emissary. For that which the heart says are the words of God, literally. Understand this.