Likutei Moharan 62:6/ליקוטי מוהר"ן ס״ב:ו׳

16. And when a person’s faith is so greatly perfected, his eating is then extremely precious, since it unites the Holy One and His Divine Presence, in the aspect of “Boaz said to Ruth [at mealtime, ‘Approach here’].” Faith then advocates before God on behalf of those who are distant, that He should take them under His wing.

2Her argument is this: The main reason those who are distant from faith in God err is that knowledge of His Godliness is essentially only [by inference] from the revealed to the concealed. But since from what is revealed they see that the world operates according to the constellational configuration, they fall into error, each one in his way. There are those who conclude that the world operates according to the natural order. And there are others who conclude that it is necessary to serve an intermediary, like those who erred with the Calf. They wanted to make the Calf an intermediary between themselves and God, saying, “[Make us a god] who will go before us” (Exodus 32:1)—the aspect of an intermediary.

3Many stumble because of misconceptions such as these, making the means an intermediary between themselves and God. That is, they believe in God, but believe also in an intermediary, insisting that a means is required. For example, they believe in the means of earning a living, namely, an occupation. They say that the means of an occupation is the essential thing; as if, Heaven forbid, without the means of an occupation God would be incapable of providing them with livelihood. They likewise make the means for healing, which is medicine, the essential thing; as if, Heaven forbid, without the medicines God would be incapable of healing.

4It is not so! The Holy One is the Means of means, the Cause of causes, and has no need of any means. Our involvement in these means must be with faith in God alone; not making the means the essential thing.

5Thus when the tzaddik nullifies some dictate of the constellational configuration through his prayer, it becomes known [by inference] from the revealed to the concealed that there is a God in existence—[a God] Who hears the tzaddik’s prayer and rearranges the configuration and changes nature. All this will be in the Future, as our Sages, of blessed memory, said: In the Future, the tzaddikim will resurrect the dead (Pesachim 68a), as well as [perform] other wonders.