St. Matthew is a Church of Catholic faith, but is independent. It does not belong to the Roman catholic church. This distinctive arouses concern in many people; however, we must understand that faith in Christ is present in many churches that do not necessarily belong to the Roman catholic church.’
There are some biblical texts that can help us understand this unity of faith in diversity: one of them is from St. Paul's letter to the Colossians: “There is one body and one Spirit, just as you were called to one hope when you were called; one Lord, one faith, one baptism; one God and Father of all, who is over all and through all and in all. But to each one of us grace has been given as Christ apportioned it.” (Eph 4:4-7). And when the community of Corinth, at the beginning was dividing, saying: “I follow Paul”; another, “I follow Apollos”; another, “I follow Cephas”; still another, “I follow Christ.” (1Cor 1,12), Saint Paul wrote to them: “Just as a body, though one, has many parts, but all its many parts form one body, so it is with Christ.” (1Cor 12:12-14).
Finally, Jesus Himself was always respectful of diversity; for example, when some of his disciples went to tell him: "Teacher, “we saw someone driving out demons in your name and we told him to stop, because he was not one of us.” “Do not stop him,” Jesus said. “For no one who does a miracle in my name can in the next moment say anything bad about me, for whoever is not against us is for us.” (Mc 9:38-40).