"If you were baptized using the wrong words, that means your baptism is invalid, and you are not baptized," Olmsted wrote in a message to parishioners. "You will need to be baptized."
"The issue with using 'We' is that it is not the community that baptizes a person, rather, it is Christ, and Him alone, who presides at all of the sacraments, and so it is Christ Jesus who baptizes."
The Diocese of Phoenix added that it did not believe Father Arango "had any intentions to harm the faithful or deprive them of the grace of baptism and the sacraments."
"I too am sincerely sorry that this error has resulted in disruption to the sacramental lives of a number of the faithful. This is why I pledge to take every step necessary to remedy the situation for everyone impacted," Olmsted said.
He said that after a "careful study by diocesan officials," all of the baptisms Arango performed up until June 17, 2021, are presumed invalid. Baptisms performed by Arango after that date are presumed valid and there is no need to repeat them.