What keeps people from believing in Christ? Why would anyone not want to have his or her sins forgiven and to have eternal life as a free gift so that they do not come into judgment? There are many reasons.
It reads in John 5:39-47 NIV
You study the Scriptures diligently because you think that in them you have eternal life. These are the very Scriptures that testify about me, yet you refuse to come to me to have life. “I do not accept glory from human beings, but I know you. I know that you do not have the love of God in your hearts. I have come in my Father’s name, and you do not accept me; but if someone else comes in his own name, you will accept him. How can you believe since you accept glory from one another but do not seek the glory that comes from the only God? “But do not think I will accuse you before the Father. Your accuser is Moses, on whom your hopes are set. If you believed Moses, you would believe me, for he wrote about me.
But since you do not believe what he wrote, how are you going to believe what I say?”