Church of God of Prophecy
In 1929 Olazábal held a healing campaign in Chicago. In 1931 Olazabal's evangelic healing campaign attracted over 100,000 people to Spanish Harlem. Olazábal's services took place at Cavalry Baptist Church in Brooklyn. Olazábal's "Puerto Rico Para Cristo" campaign in 1936 was considered unsuccessful. On September 10, 1936 Olazábal announced his intention to unite with The Church of God, at that time the group under the leadership of A.J. Tomlinson which would later become the Church of God of Prophecy.