I had a student in a class of mine once who had recently been treated for bone cancer in her spine.  She was using a cane.  She talked to me about faith and Heaven, and the fears she had when she was sick.  We discussed the issue of what it means to believe.  Today, we look at the Book of Joel, in particular at a passage referenced in Acts that says that all people will one day be able to accept God.  This serves as a critical motivational factor for Acts: to fulfill an ancient prophecy.  We consider the larger issue of who can believe, what it means to believe, and if there are alternative ways to "believe".