And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is that good and acceptable and perfect will of God. ~~Romans 12:2
To be conformed means "to form" or "mold". The word "world" is the normal word for "age" or "era". Instead of being molded by this world system, the citizens of the Kingdom should be transformed through the Word. Spiritual transformation starts with a different mindset. Meaning, believing in the mind and soul of the individual.
Remember, a mind dedicated to this world system and its concerns will eventually lead a life of chaos and despair. It will cause you to be tossed back and forth by the currents of culture.
Once you have a renewed mind, you are able to grow and mature in to your purpose that the King has created you for. But keep this in mind: a renewing of the mind is always a process and for many, a journey. But if you still seek the Kingdom, with all your heart, you can put your worries aside and your faith in Him keeping His Word.
Heaven and earth will pass away, but My Words will by no means pass away. ~~Mark 13:31
God and His Words are One.
You can put all your trust
in His Word.