Maria Leide Miculic was born in August 1956 in the city of Ana Dias, São Paulo, Brazil.

Maria Leide Miculic, more commonly known as Pr. Leide, read the entire Holy Scriptures for the first time at the age of eleven. She gave her life to the Lord Jesus Christ in 1969; two years later, at just thirteen years old, she began her ministry in the northeastern region of Brazil. She later continued preaching throughout the North, Central-West, Southeast, and South of that vast country.

After completing her seminary studies, at the age of twenty-two, she moved to the Republic of Bolivia as a missionary. In 1983, she was sent to the Republic of Argentina by the Cathedral of the Assemblies of God, Madureira Ministry [A Baleia], located in W5, Brasília - DF - Brazil, to assist families who had been affected by the Falklands War. She served there for a period of seven years. In 1986, she made her first trip to the United States of America, Puerto Rico, and Canada. In 1991, she moved from Argentina to the United States with her husband, Pastor Jorge H. Miculic, where they founded Last Hour Ministry, Inc.

Then in 2005, during a missionary trip to La Paz, Bolivia with her family, Pastor Maria Miculic experienced a groundbreaking revelation that inspired her to write her first book, El Primogénito (Birthright). Through a unique blend of scientific insight and scriptural study, she presented a powerful case that Jacob was indeed the rightful heir to Israel’s birthright—unveiling a truth long concealed within the mysteries of God for thousands of years.

Over the past twenty-five years, Pastor Maria Miculic has given lectures and conferences in more than 22 countries. This servant of God, with fifty-two years of ministry, has reached cities, provinces, and nations—preaching, teaching, and guiding lives through Divine Revelation. Without exception, she continues her work across a wide range of socioeconomic, cultural, intellectual, and religious backgrounds. Never discriminating, she consistently upholds above all the Pure Doctrine of the Word of God. She is also an advocate for Human Rights and an interdenominational preacher of the Holy Truth.

Currently, she continues her work with the Brazilay Project, a social initiative dedicated to supporting underprivileged children across Brazil. She resides in the United States with her husband and children and is dedicating herself to her next books, ‘Who Wrote the Epistle to the Hebrews?’ and ‘Unveiling the Apocalypse.’