Quotation do Malachiasza 3:1

From the [book of] commentary of Eliezer Ben Hyrkanus: "And he said 'I certainly was zealous for Ad-nai'" (I Kings 19:14) The Holy One of Blessing said to Eliahu: You were zealous regarding idolatry in Shittim, as it says: 'Pinchas the son of Eleazar etc.' and here you were certainly zealous! For your life [I swear] that there will be no brit milah that Israel does and you don't see with your eyes. From here the sages established that a honorary seat will be made for Eliahu, who is the angel of the brit [milah] as it says "And the angel of My brit" (Malachi 3:1)