Jules Martínez-Olivieri (PhD Trinity Evangelical Divinity School) is the Milton B. Engebretson Chair in Evangelism and Justice at North Park Theological Seminary. He is the author of A Visible Witness: Christology, Liberation, and Participation (Fortress, 2016) which is available in Spanish as Un Testimonio Visible: Cristología, Liberación y Participación (Publicaciones Kerigma, 2020).