Likutei Moharan 31:5/ליקוטי מוהר"ן ל״א:ה׳

15. Now, there are two levels of Covenant: the aspect of Avraham and the aspect of Eliezer.

2Avraham is the upper Covenant, the heaven that separates between the upper waters and the lower waters. He is the aspect of a ben ChoRiN (a free man), as in (Ecclesiastes 10:17), “Happy are you, O land, when your king is a free man.” And he produces offspring, as in (Genesis 12:5), “the souls which they made in ChaRaN.” This is because freedom is dependent upon the Covenant, as in (Zechariah 9:11), “Because of the blood of your brit I set free your prisoners from the pit.”

3And Eliezer is the lower Covenant. This is as in (Exodus 23:21), “for My name is in him”—his name is the same as his Master’s. He is ChaNoKh, Metat, corresponding to: “he called out his ChaNiKhav (trained servants)” (Genesis 14:14) ; “ChaNoKh (educate) the youth” (Proverbs 22:6) ; “Woe to you, O land, when your king is a youth” (Ecclesiastes 10:16). He is under the upper Covenant, as in (Genesis 24:2), “Please place your hand under my thigh.” And he is the heaven which separates between clear waters and sullied waters, between forbidden and permitted, between kosher and unkosher, and between impure and pure. This is the meaning of, “Educate the youth al pi (in line with) his way.” Specifically “AL Pi”—i.e., Torah sh’b’AL Peh (the Oral Law).

4And, the upper Covenant is guarding the brit, while the lower Covenant is keeping [the laws of] forbidden and permitted, etc. A person has to possess both these levels of Covenant, that is, he has to be both a tzaddik and a scholar. For an unlearned person cannot be a saint (Avot 2:5). He is called a tzaddik through guarding the holy brit, and a scholar through the forbidden and permitted.

5And this is the meaning of: “If the teacher is like an angel of the God of Tzevaot (Hosts), [seek Torah from his mouth]” (Chagigah 15b). He must be a tzaddik and a scholar. “Angel” alludes to scholar, the concept of Metat, as above; “TZeVAOT”—he is an OT (sign) in His TZaVA (army)—alludes to the tzaddik, the sign of the Covenant.

6And wherever tzaddik is mentioned, the lower Covenant is also included in him. This is because the lower is encompassed in the upper, as in, “your hand under my thigh.”