<P> Suddenly surrounded by a carnival - like light tunnel, he sees hallucinations of his young son David, who died a few years prior from cancer . His son enthusiastically claims that he is alright and he should let God's love fill him, proclaiming "Let there be light!" as Dr. Harkens comes out of unconsciousness . After being clinically dead for 4 minutes, he awakens to find his Christian ex-wife at his side, and tells her that he saw their son . His doctor diagnoses his visions as merely adrenal brain surges that are caused in times of trauma . </P> <P> Harkens continues to struggle with his crisis of science versus faith . After his ex-wife shows up at his house to check on him, he decides to go and talk to pastor and former mob member Vinny at a church . After hearing the resurrection story, he has an epiphany and is baptized again as a believing Christian . After multiple visits from his ex-wife, he decides to rekindle their relationship for each other so they can be a family again with their two surviving sons . Shortly after proposing again and accepting, his soon - to - be-again wife Katy comes down with cancer, which is past the point of treatment . </P> <P> Fox News' Sean Hannity hears of Dr. Harkens' story and asks him to come onto his program because he considers his story of great merit . Harkens announces a campaign of world peace called the "Let there be light" campaign . He believes that if anyone in the world shines their lights to the sky at night that it could be a bolster to world unity . During the night of the event the simultaneous action of the world shining their light to the heavens is visible from space . Meanwhile back home, the newly remarried Harkens are having a night of family time singing Christmas songs outside . The dying and weakened Mrs. Harkens suddenly dies in Dr. Harkens' arms . </P> <Ul> <Li> Kevin Sorbo as Dr. Sol Harkens </Li> <Li> Sam Sorbo as Katy Harkens </Li> <Li> Daniel Roebuck as Norm </Li> <Li> Donielle Artese as Tracee </Li> <Li> Gary Grubbs as Dr. Fornier </Li> <Li> Travis Tritt as Dr. Corey </Li> <Li> Joe Herrera as Dr. Shell </Li> <Li> Leander Suleiman as Dr. Patel </Li> <Li> Walnette Marie Santiago as Cat Ryerson </Li> <Li> Olivia Fox as Vanessa </Li> <Li> Dionne Warwick as Herself </Li> <Li> Mona Amein as Sally </Li> <Li> Sherri Eakin as Waitress </Li> <Li> Michael Franzese as Pastor Vinny </Li> <Li> Sean Hannity as Himself </Li> </Ul>

Who sings in the movie let there be light
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