The kingdom of God is within you means that the power and peace of God can be found inside you, instead of in a physical place such as a castle or a palace. It means that you can have a special connection with God that doesn't have to do with going to a certain place like a church or a temple. Instead, it's about understanding and believing in God and feeling His presence inside of you. It's about following God's teachings and feeling God's love and protection at all times.