There’s a depth to Brock Purdy. Having gone from the final pick in the 2021 NFL draft to third string quarterback for San Francisco to leading the 49ers into Super Bowl LVIII, there’s a maturity that exudes from the 24-year-old former Iowa State standout. It stems from his faith in Christ. And that includes his recognition of the platform he now occupies in his fast ascent to the pinnacle of professional football success. “This is who God has called me to be, and I’ve believed that from day one,” he said a year ago on the Sports Spectrum podcast. “I’ve believed that Jesus Christ did come down …