Speaking of the Kingdom, the Savior undoubtedly has in mind the Kingdom that He Himself brought into the world, not the one usually imagined by the people listening to Him. His listeners, as a rule, imagined a strong earthly state, living according to the laws of the Torah and therefore enjoying God's protection, headed by a righteous King to Whom God had given special authority over the world and over people. Such a kingdom, of course, could also be open not only to Jews, but everyone else would in any case have to become Yahwists and accept Judaism in order to make use of what the Messiah would bring into the world.
But Jesus, meanwhile, is speaking of something else: of the Kingdom as a spiritual reality that exists independently of any earthly structures and institutions, whether governmental or social. This Kingdom enters the world through Him, and the way into it is opened by relationship with Him and with His heavenly Father. The true Kingdom of Christ is a space of relationships, above all the relationships that bind Christ with the Father. And anyone can enter the space of Their relationships, regardless of language, nationality, cultural tradition, or religious tradition. Christianity is not a religion and not even a spiritual practice, but life in the Kingdom, and therefore in the space of relationship between the Father and the Son. Here the question of who is first and who is last is not so simple. In essence, it has no meaning at all: in the Kingdom everyone receives the fullness of life that he can contain. But who will be joined to this fullness earlier is indeed an open question.
It would seem that in Judea in Gospel times there were many people whose main goal and meaning in life was precisely the expectation of the Messiah and the Kingdom. But their expectation became for them a kind of religion, or more precisely, part of their religious life, at the foundation of which naturally lay Judaism. And religion tends to become something valuable in itself and self-sufficient, often obscuring the goal for which it arose and exists.
On the other hand, there were many people in the world seeking, often without realizing it, precisely the Kingdom and its life, often not knowing where or with Whom to seek it. And if it was often very difficult for religious messianists to humble themselves before the Messiah as He is, then for seekers of the Kingdom, unburdened by any religion, it was much simpler and more natural to come to Him. And no wonder: Jesus Himself says that it is hard for a rich person to enter the Kingdom. And here it no longer matters whether we are speaking of material, cultural, or religious wealth.
