Many of the people that respond to an invitation, pray a prayer, and fill out a card have never experienced true conversion. The Gospel has penetrated their intellect and even their emotions but not their will. Faith doesn’t become saving Faith until it impacts all three.
James wrote that even demons have a faith that impacts their intellect (they know there is one God) and emotions (they shudder), but it does not save them because it does not result in a change in their behavior.- Dr. Early(Evangelism is… How to share Jesus with passion and confidence)
What does it profit, my brethren, if someone says he has faith but does not have works? Can faith save him? 15 If a brother or sister is naked and destitute of daily food, 16 and one of you says to them, “Depart in peace, be warmed and filled,” but you do not give them the things which are needed for the body, what does it profit? 17 Thus also faith by itself, if it does not have works, is dead.
18 But someone will say, “You have faith, and I have works.” Show me your faith without your[a] works, and I will show you my faith by my[b] works. 19 You believe that there is one God. You do well. Even the demons believe—and tremble!