Rev. Gregory T. Labus was ordained a priest for service in the Catholic Diocese of Brownsville on May 27, 2006.
Father Labus served as assistant to the rector at the Basilica of Our Lady of San Juan del Valle- National Shrine, parochial vicar of Immaculate Conception of Mary Church in Harlingen, Texas, parish administrator at St. Mary's Church in Santa Rosa, Texas, and pastor of Our Lady of Mercy Church in Mercedes, Texas.
On May 18, 2012, Father Labus returned to his home parish, St. Joseph Catholic Church, as pastor of the parish and school. He was the first new pastor in more than 16 years, proceeding the death of Msgr. Robert Maher, who was Pastor since November 16, 1995.