To better understand what the rapture really is, see my article:
John 14;19
Yet a little while: and the world seeth me no more. But you see me: because I live, and you shall live.
Jesus established His Ekklesia, founded upon what Peter stated of Who Jesus IS. That is a spiritual Body of Christ. The Kingdom is yet to be revealed, except that Jesus Himself told the Pharisees ‘the Kingdom is at hand’ ... He is the central and most essential aspect of The Kingdom. But again, He told His disciples at the last supper: Luke 22:17Then he took a cup, gave thanks, and said, Take this and share it among yourselves, 18because I tell you, from now on I will never drink the product of the vine until the kingdom of God comes.