Wayne, if you have even a little faith, you need to exercise it. If you beleive that Jesus Christ came as god in the flesh and died for you, for your sins, and rose again so you could live forever, then you ahve been given His authority to use His name to take hold of all He died to give you. Satan wants to steal it all from you--all that is rightfully yours, and you can;t allow him to do that.
As God uses His word to establish a thing, so you must speak out the truth of the word that Jesus Christ is King and Lord, and that you follow Him and no other. soeaking it out makes sure the enemy hears it, At the name of Jesus, evil spirits cringe and when you tell them to get lost by His authority, they run.