The devil the god of this world who is also called the father or originator of Lies will do all that he can to stop somebody from believing the Truth by offering them alternatives, he has a buffet or a smorgasbord of different beliefs or systems of beliefs for you to pick and choose from in order to stop you from believing and becoming convinced of the Truth. And this is why there are consequences to believing right versus believing wrong which is why God and His Word puts so much emphasis on the God Kind of Faith or believing what He believes. The Gospel of John has been coined by many scholars the Gospel of Belief because it has reference to "believing"more than any other Gospels and this is another reason why in Hebrews 11:6 it emphatically says that without faith no one can please God. When the Lord was teaching me on faith years ago He gave me this word that has changed my whole life and walk with Him: faith is trusting in someone you can't see to do something you cannot do. We are saved by grace through faith, we are healed by grace through faith and we are provided for by grace through faith, putting our faith or trust in something that God has already done for us and given freely get positionally, at the cross. Everything that God has already done for Mankind has to be received by believing so that it can become effective and efficacious