Bill Glass, a former professional football player who won an NFL championship and set sacks records for the Cleveland Browns, started Bill Glass Prison Ministries after retiring from football in 1968 to do evangelical preaching focused on reaching prisoners. The ministry, which discusses spirituality through sports, was led by Glass until his death in 2021 and had reached over 6 million inmates by 2019 through Glass and volunteers like Robert Rienecker, who supports and teaches for the ministry.