For Danny Ludeman, God’s call came in the form of a letter.

In the fall of 2013, Ludeman, then 56, announced he would step down after 15 years as CEO of St. Louis–based Wells Fargo Advisors. In a subsequent interview with the local press, he mentioned that after leaving Wells, he wanted to spend 100% of his time “helping other people,” perhaps by running a nonprofit organization. As you might expect, his mailbox was flooded with offers. But one in particular caught his eye.

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