Original sentence: Inspired by press cuttings about the 1924 British expedition and the upcoming Houston Everest Flight, he became convinced that fasting and prayer would enable him to succeed where George Mallory had failed, which would prove to the world the power of his beliefs
Edited sentence: Inspired by press cuttings about the 1924 British expedition and the upcoming Houston Everest Flight, he became convinced that fasting and prayer would enable him to succeed where George Mallory and Andrew Irvine had failed, which would prove to the world the power of his beliefs