Matthew 18:20

20 For where two or three are gathered together in my name, there am I in the midst of them.
οὗ γάρ εἰσιν δύο ἢ τρεῖς συνηγμένοι εἰς τὸ ἐμὸν ὄνομα ἐκεῖ εἰμι ἐν μέσῳ αὐτῶν