Ortega was born on 18 October 1936 in
Jagüey Grande,
Matanzas, Cuba. He studied for the priesthood at the Seminary of San Alberto Magno in Matanzas and at the Seminary of Foreign Missions in
Laval, Quebec, Canada. He was ordained a priest on 2 August 1964 by Bishop
José Domínguez Rodríguez of Matanzas. He was assigned to various parishes in the
Diocese of Matanzas from 1964 to 1966. Ortega was imprisoned by the Communist government from 1966 to 1967. From 1967 to 1969, Ortega was pastor of Jagüey Grande, his native city; like all the pastors in Cuba, due to a severe shortage of priests in those years, he served in several parishes and churches at the same time. He was also pastor of the cathedral of Matanzas, and at the same time, assisted the parish of Pueblo Nuevo and two other churches in the countryside; he was also president of the diocesan commission for
catechesis and created an active apostolate with the youth of the diocese. In those years, which were even more difficult for the pastoral work of the church, he began a youth movement that included, among other forms of apostolate, a summer camp for the youth, and a work of evangelization through theatrical works performed by them. At the same time, he was a professor at San Carlos y San Ambrosio Interdiocesan Seminary, Havana, where for several years he traveled every week to teach moral theology. ==Bishop, archbishop and cardinal==