Everyone is welcome in the Kingdom of God. You can come as you are. The Kingdom of God is the rule of God, in and through His people. The gate into the Kingdom of God is Jesus and faith in His finished work. Entering the Kingdom of God then goes hand in hand with a change of heart and mind. This is what we call repentance - METANOIA. The message of Jesus was a call to repent (change the way you were thinking) in the light of the eminent engagement with the Kingdom.