And when He was asked by the Pharisees when the Kingdom of God would come, He answered them and said, “The Kingdom of God does not come with observation; nor will they say, ‘See here!’ or ‘See there!’ For indeed, the Kingdom of God is within you.” Luke 17:20–21

But you are not in the flesh but in the Spirit, if indeed the Spirit of God dwells in you. Now if anyone does not have the Spirit of Christ, he is not His. Romans 8:9

From that time Jesus began to preach and to say, “Repent, for the kingdom of heaven is at hand.” Matthew 4:17