Being asked asked by the Pharisees when the kingdom of God is coming, he answered them, "The kingdom of God is not coming with signs to be observed; nor will they say, 'Lo, here it is!' or 'There!' for behold, the kingdom of God is within you."
That last bit can also be understood "in the midst of you," but I tend toward "within you." It fits, I think, the undermining of expectations. First Jesus undermines the expectation of when. It is not a when. It is not imminent. It is not in the future (or the past). Although we might say it is in the present. But neither is it a where. It is not here nor is it there. That is why I don't like "midst." I like it inside. You carry it with you all the time. Is it possibly a who? Or a collection of who's? If the kingdom of God is IN you, is it a part of you? Is it something that only you can activate, create, call into being? If it is in your midst, it is because it is inside you and you have allowed it to break forth. Or it gains strength with a collection of who's who have gathered together, each with the kingdom inside.