College philosophy professor Mr. Radisson's curriculum is challenged by his new student, Josh, who believes God exists.

Mark: You prayed and believed your whole life. Never done anything wrong. And here you are. You're the nicest person I know. I am the meanest. You have dementia. My life is perfect. Explain that to me!
Mina's Mother: Sometimes the devil allows people to live a life free of trouble because he doesn't want them turning to God. Their sin is like a jail cell, except it is all nice and comfy and there doesn't seem to be any reason to leave. The door's wide open. Till one day, time runs out, and the cell door slams shut, and suddenly it's too late.
Josh Wheaton: How can you hate someone who doesn't exist?
Josh Wheaton: Only a real risk can test the reality of a belief.
Reverend Dave: It's not easy. But it's simple.
Dr. Stevens: I know the world can't get along without you but it's preparing to do just that.
Josh Wheaton: I could drop the class, run away, pretend like it never happened, which is what my girlfriend wants. I could sign the paper saying something I don't believe. Or I commit academic suicide in front of a live audience by trying to prove that God exists.
Reverend Dave: How many people in that class?
Josh Wheaton: Eighty maybe.
Reverend Dave: And how may of them do you think would ever step foot in here, or any other church for matter?
Josh Wheaton: Well, none probably.
Reverend Dave: So, your acceptance of this challenge, if you decide to accept it, may be the only meaningful exposure to God and Jesus they'll ever have.
Josh Wheaton: Yeah. Yeah, I suppose so.
Reverend Dave: Check out Matthew 10:32-33.
Josh Wheaton: What, that's it? That's all?
Reverend Dave: Yeah.
[gets up to leave]
Josh Wheaton: Just a Scriptural citation?
Reverend Dave: If you're still undecided after that one, look at Luke 12:48.
Josh Wheaton: It can't be that simple.
Reverend Dave: Sure it can. You're here because that still small voice inside you isn't happy with the choices everyone else wants you to make. Personally, I think it's the Holy Spirit talking to you. That's how He interacts with us if we allow him to. All you have to do is decide whether or not you're willing to listen. It's not easy, but it's simple.
Freshman Registration Advisor: You might want to think about a different instructor.
Josh Wheaton: Because?
Freshman Registration Advisor: Let's just say you're wandering into the snake pit. I'd recommend Patel or maybe Mueller.
Josh Wheaton: Come on, man, it can't be that bad.
Freshman Registration Advisor: Think Roman Colosseum, lions, people cheering for your death...
Josh Wheaton: Yeah, but I'd have to rearrange my whole schedule. I don't think I can really...
Freshman Registration Advisor: It's your funeral. Last drop date is the 22nd; you might want to keep that in mind.
Student: God's not Dead!
Josh Wheaton: I just keep thinking of that C.S. Lewis line, "Only a real risk can test the reality of a belief."
Kara: So, you're gonna risk our future over your yearbook quote?
Reverend Dave: [In the Church, Josh is sitting in a Pew, when the Preacher walks in] Waiting for someone?
Josh Wheaton: Yeah, you could say that. It looks like he's out at the moment.
Reverend Dave: Well, maybe that's why he sent me.
Reverend Jude: God is good.
Reverend Dave: All of the time.
Reverend Jude: And all of the time.
Reverend Dave: God is good.
Reverend Jude: After watching Professor Radisson get run down by a hit and run and telling him to accept Jesus before he dies: "What happened here tonight, is a cause for celebration. A short pain, but think about the joy in heaven"