In 1940 he entered the Minor Seminary of Saint Joseph (Basilian Fathers) in Prudentópolis (Parana state).
At the end of 1948 began his theological studies at the Gregorian University in Rome and received a bachelor's degree and a licentiate.
On January 1, 1950 Krevey amounted his perpetual vows in Rome in the Church of Saints Sergius and Bacchus.
On February 13, 1972 Pope Paul VI in Saint Peter's Basilica in Rome gave him episcopal consecration.
In March, returned to Brazil and begins his pastoral ministry with Bishop José Romão Martenetz.
On 13 December 2006 Pope Benedict XVI accepted the renunciation of Bishop Krevey of his duties as eparch of Curitiba.