Born in Zacatecas, Mexico, in 1926, Isáis was ordained in Brooklyn, New York, in 1957. He married Elisabeth Fletcher of Terre Haute, Indiana, in Costa Rica in 1955. The couple had four children, Raquel, Cynthia (deceased), Sally and David.
Juan served as an instructor at several international congresses, including the Billy Graham evangelism conferences in Amsterdam 1986 and 2000. He was also a participant in the Lausanne Congress on World Evangelization since its inception.
The ministry of Juan Isáis has been appreciated for both its depth and breadth. As the Latin America Mission said in a statement following his death, “In his long ministry, he founded churches, preached in thousands of campaigns, pastored congregations, taught in seminaries and Bible institutes, wrote scores of articles, songs, books and manuals, trained many leaders, and practiced skillful, courageous and pedagogical journalism.”
“Our beloved brother, Juan Isáis, was a true ambassador for the Gospel in all of Latin America and beyond,” the statement said.
It continued, “For the Latin America Mission it has been an honor and a precious privilege to have Juan and his family to be counted among our missionaries. His ministerial legacy, as rich and varied as his gifts, is imbedded in thousands of hearts, as it is in those institutions that glorify God and promote the Gospel of salvation in Jesus Christ.”
Tributes pour in for Mexican evangelist Juan Isais, Latin America Evangelist, May 2, 2002