Jesus told Peter that he was the rock on which Jesus would build his church and that the gates of Hades would not overcome it. Then, in Jesus’ next statement to Peter he says, “I will give you the keys of the kingdom of heaven; whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven” (Matthew 16:18). If we think the church is an earthly entity given the task of finding and strengthening the people of kingdom of God and that the kingdom of heaven is a spiritual realm that exists both on earth and in heaven, then it is reasonable that Jesus was speaking here of two different aspects of Peter’s future apostleship.
Churches are institutions formed in the here and now by Christians to do the things Jesus has given the churches to do. However, “Jesus said, “My kingdom is not of this world. If it were, my servants would fight to prevent my arrest by the Jewish leaders. But now my kingdom is from another place.” (John 18:36, NIV). We can probably read “from another place” as meaning “of a different kind.”
Luke 14:1-24 is a rendition of words Jesus said to Pharisees at a Sabbath meal to which he had been invited. Most of what he said contradicted the beliefs of the Pharisees, however “When one of those at the table with him heard this [the teaching concerning who should be invited to banquets], he said to Jesus, “Blessed is the one who will eat at the feast in the kingdom of God” (Luke 14:15, NIV). Jesus did not deny then there would be a feast in the kingdom of God but told the parable of the great banquet about who would be enjoying the feast. The next section of the fourteenth chapter is where Jesus spoke about the cost of discipleship.