Neither shall they say, Lo here! or, lo there! for, behold, the kingdom of God is in the midst of you.
All Commentaries on Luke 17:21 Go To Luke 17
Hippolytus of Rome
AD 235
But they assert that not only is there in favour of their doctrine, testimony to be drawn from the mysteries of the Assyrians, but also from those of the Phrygians concerning the happy nature-concealed, and yet at the same time disclosed-of things that have been, and are coming into existence, and moreover will be,-(a happy nature) which, (the Naassene) says, is the kingdom of heaven to be sought for within a man.
This, says he, is the kingdom of heaven that reposes within us as a treasure, as leaven hid in the three measures of meal.