As I have said: that is a possible translation of the Greek. But it fits badly in the context, because then the passage would say that the Pharisees already have the reign of God within them. Above all, that kind of invisibility and internal character in no way matches the manner in which Jesus speaks about the reign of God elsewhere. The realm of which he speaks is precisely
But it created, or at least accelerated, a fateful and continuing impact. Harnack and many others used this translation as support for assigning the reign of God to the invisible realm of the soul. This apparently solved a whole list of problems, almost as if incidentally. For example, there was the so-called imminent expectation of the end of things. If the place for the reign of God is only in the soul it can certainly be present already. The reign of God within the soul is not disturbing to anybody and can be asserted at any time. The problem of “the reign of God and society” was also resolved. If the reign of God is only within, a clean and simple separation can be made between external conditions and the hidden realm.
In reality, of course, the separation cannot be maintained. It is not only individuals and their inner lives that need redeeming but also the situations within which they live—for example, the lack of freedom, the structures of injustice, and the mechanisms of manipulation that have eaten their way into society.
Jesus was not just concerned with souls. He wanted a changed society. That is precisely why he begins the new thing within a community of disciples whom he orders to quit acting as if they are superior, to forgive one another seventy-seven times a day, and to turn the other cheek when someone strikes them.
Even Origen
Of course, it was not Adolf von Harnack who first located the reign of God “within.” We have seen that Martin Luther had already understood it as an “inner kingdom.” But Luther was not the first to interpret the text in that way either. Throughout the history of theology, but especially in the history of mysticism, we find a long line of related interpretations that go back as far as Origen, the great theologian of Alexandria (185–ca. 255). Origen wrote a work “On Prayer” in about the year 233, and within it he gives an interpretation of the Our Father. Speaking of the third petition, he says:
[Whoever] prays for the coming of the kingdom of God prays with good reason for rising and fruit bearing and perfecting of God’s kingdom within him.… The Father is present with him, and Christ rules together with the Father in the perfected Soul, according to the saying… We will come unto him and make abode with him. By God’s kingdom I understand the blessed condition of the mind and the settled order of wise reflection.
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For Origen, then, the “coming” of the reign is the “coming” of the Father and Son into the soul of the one who truly prays. They take up their dwelling in the inmost being of that person. That is a very beautiful and also an altogether biblical thought (cf. John 14:23). But does it really cover what Jesus meant by the coming of the reign of God?
Purely Religious?
We are seeking reasons why exegetes today find it so difficult to connect the reign of God and the people of God in any meaningful way. One of the most important reasons was treated at length because it played a central role in the epochal forgetfulness regarding the people of God in the last several centuries, namely, individualism or subjectivism. Adolf von Harnack was swimming with a powerful tide here. But there were many other reasons for the absence of the idea of the people of God from discussions about the reign of God: these, for example: