3 For if according to the Lord's saying, that which two shall have agreed upon on earth concerning anything which they shall ask, shall be done for them, as He says, by My Father, Who is in heaven, for: “Where two or three are gathered together in My Name, there am I in the midst of them,” how much less, where the full congregation is gathered in the Name of the Lord. Where the demand of all is unanimous, ought we to doubt that the Lord Jesus is there as the Author of that desire, and the Hearer of the petition, the Presider over the ordination, and the Giver of the grace?
Source: Letters (New Advent)