Likutei Moharan 62:7/ליקוטי מוהר"ן ס״ב:ז׳

17. This is [the explanation of]: {“Then Yehudah approached him and said, ‘Please, my lord, let your servant say something to you personally. Do not be angry with your servant, for you are just like Pharaoh’” (Genesis 44:18).} Then Yehudah approached him—This is a meeting of one king with another.

2and said, Please, my lord—The Divine Presence asks the Holy One to show mercy to those who are distant.

3let your servant say something to you personally—So that no intermediary will be heard anymore.

4Do not be angry with your servant—Concerning the past.

5for you are just like Pharaoh—“Pharaoh” connotes revealing.

6Mankind knows You only from what is revealed. And since You are known only from what is revealed, they therefore erred, each one in his way. But when You nullify Your Will to the will of the tzaddik—as our Sages, of blessed memory, said: The Holy One decrees, and the tzaddik nullifies (Moed Katan 16b)—then, they will know [by inference] from the revealed to the concealed. When they see that the constellational configuration dictates some decree, but that the tzaddik nullifies it, they know that God exists; that He carries out the will of the tzaddik.

7This is [the explanation of]: Just as Pharaoh decrees but does not carry out—“Pharaoh” is the constellational configuration, whose dictates are manifest for all to see.

8you too decree but do not carry out—Since the tzaddik nullifies it.