Jesus distinguished the kingdom of God as something that could not be discovered through observation. He said, “the kingdom of God is within you” (Luke 17:21). If you think of a kingdom as a realm of control or something that is able to be governed, then you could say the kingdom of God operates on the inside of a person by way of the believer’s heart making conscious decisions to obey God’s commandments. The things that I do for God may not be evident to the people around me, but they are visible to everyone in the spiritual realm. To a certain extent, the kingdom of God is hidden right now; it is intentionally being kept out of view.
Jesus told his disciples, “The days will come, when ye shall desire to see one of the days of the Son of man, and ye shall not see it” (Luke 17:22). By this, I believe Jesus meant that the physical manifestation of his work, the miracles and other supernatural activities he performed while he was on Earth would no longer be evident, meaning they would not be clearly seen or understood. The primary way we know that Jesus is alive today is by the conviction we feel in our hearts that he is speaking to us. After Jesus’ resurrection, he talked to two men who were traveling to a village called Emmaus. At first they didn’t recognize Jesus, but while they were eating a meal with him, it says in Luke 24:31 their eyes were opened and they knew him. After he vanished out of their sight, “they said one to another, Did not our heart burn within us, while he talked with us by the way, and while he opened to us the scriptures” (Luke 24:32).
Jesus told his disciples there would come a day when he would be revealed to the world (Luke 17:30). The way he described it, Jesus’ unveiling would result in a sudden shift in the physical and spiritual realms that would bring about a separation of the kingdom of God from the kingdom of Satan. He said, “I tell you in that night there shall be two men in one bed; the one shall be taken, and the other shall be left. Two women will be grinding together; the one shall be taken, and the other left. Two men shall be in the field; the one shall be taken, and the other left” (Luke 17:34-36). Apparently, what will happen is everyone who does not belong in God’s kingdom will be removed from the earth in judgment as in the flood of Noah’s day (Luke 17:26-27) (G3880).