High as the horses' bridles

the long version

"It's 1980 at a crowded amphitheater in Queens, New York, and a nervous Josiah Laudermilk, age 12, is about to step to the stage while thousands of believers wait to hear him, the boy preaching prodigy, pour forth. Suddenly, as if a switch had been flipped, Josiah's nerves shake away and his words come rushing out, his whole body [filled] to the brim with the certainty of a strange apocalyptic vision. But is it true prophecy or just a young believer's imagination running wild? Decades later when Josiah (now Josie) is grown and has long since left the church, he returns to Queens to care for his father who, day by day, is losing his grip on reality"--Amazon.com.