Born on 12th June 1941 in Orozco (Vizcaya). He studied at the Universidad Pontificia de Salamanca, the Universidad de Santo Tomás and the Bible Institute (Rome), furthering his studies in the universities of Hamburg and Bonn. He taught in the Faculty of Theology of the Universidad Pontificia de Salamanca from 1975 to 1984. Later, he expanded his research at the Pontifical Bible Institute, Rome and other centres in America. From 1989 to 2003 he was Professor of Dogmatic Theology in the Universida Pontificia de Salamanca. He is a regular contributor to the magazines Estudios, Estudios Trinitarios, Salmanticensis, Carthaginensia, Marianum, Ephemeredes Mariologicae.