“וַיִּשָּׂא עֵינָיו, וַיַּרְא, וְהִנֵּה שְׁלֹשָׁה אֲנָשִׁים, נִצָּבִים עָלָיו; וַיַּרְא, וַיָּרָץ לִקְרָאתָם מִפֶּתַח הָאֹהֶל, וַיִּשְׁתַּחוּ, אָרְצָה”
“He lifted up his eyes and looked, and behold, three men were standing in front of him. When he saw them, he ran from the tent door to meet them and bowed himself to the earth”
The ‘tent door’ as the Zohar explains is the gate of the faith that Abraham got in after he had his circumcision. The ‘heat of the day’ is numerically equal to ‘blood of the circumcision’, ‘דם המילה’ (from Baal Haturim). It is the aspect of a Tzadik.
When the foreskin is removed a person can elevate to righteousness, which is Yessod and ‘justice’ that is the aspect of Malchut. These two levels of righteousness and justice are the secret of faith that unify them together.
The knife of the circumcision represents judgments of female aspect and the foreskin represent judgments of male aspect. These two ‘negatives’ cancel each other to turn positive by revealing the spiritual unification of Yessod and Malchut. This is why the ceremony is called “bringing the child into the covenant with Abraham”. Isaac was the first one to be circumcised on the eighth day after birth. He is also mentioned (אשר קידש ידיד מבטן) in the blessings during the ceremony.
Participants in a circumcision ceremony benefit greatly from the revelation of light described above. It is recommended that the mohel, who is the one that perform the circumcision raise the knife with the little blood on it. It reveals the aspect of the cancellation of judgments. It has the cleansing power that is equivalent to 40 days of fasting when participating in the entire process, including the meal after the circumcision that includes special blessing for the baby. It’s good for women who wish to have children to see it. Only few Mohels show the knife because in the past the Jew haters refered to this ceremony as reason to spread hate and actions against Jews. If a mohel is asked then he will leave the knife on a table for people to view it before cleaning it.
Below is a video showing a complete circumcision ceremony.
The three were the messengers, the angels Michael, Gabriel and Raphael. When they come down to this world they take the shape of men. Also represent the colors White, Red and Green.
Michael is the aspect of white because he is on the Right column representing Chessed. Gabriel is Red, Left, Gevurah. Raphael is Green, Central column, Tiferet. These colors come from the colors of the rainbow that represent the Shechina.
Abraham felt the presence of the Shechinah and “He lifted up his eyes’ and ran to out of his tent to meet them. I heard from Rabbi Ben Zion Mutzafi Shlita (Israel) that the Torah mentions that Abraham lift his eyes only twice and both when he saw the Shechina, The above is the first one and the next one is (Genesis 22:4) when he took Isaac for the binding and he lifted his eyes to see the ‘place’ from far. The ‘place’ was the Mount Moriah where the Holy Temple was built later by King Solomon (2 Chronicle 3:1).
Abraham had prophetic vision and could see beyond the physical realm. When they arrived to the point where he could see a cloud connected to the mountain he knew that it was the presence of the Shechina. He asked Isaac if he sees something on the mountain and Isaac did see the same vision. The other two that came alone, Eliezer, his servant and Ishmael, his older son could see it so he left them behind because they didn’t have the merits to come closer to the Shechina (Genesis 22:5) .