Estep was an American Baptist historian, author, and professor of church history. He was considered one of the world’s leading authorities on the Anabaptist movement, a Christian sect that rejects infant baptism and practices the ritual of believer’s baptism only after a person has made a declaration of faith. Estep wrote numerous works, including books on subjects such as Baptist and Anabaptist history, religious liberty, and world missions. At what theological seminary did he teach? Discuss