So in other words the only valid baptism is one with your church. That is not the message of the gospel.
Acts 10
42And He commanded us to preach to the people, and to testify that it is He who was ordained by God to be Judge of the living and the dead.
43To Him all the prophets witness that, through His name, whoever believes in Him will receive remission of sins."
44While Peter was still speaking these words, the Holy Spirit fell upon all those who heard the word.
45And those of the circumcision who believed were astonished, as many as came with Peter, because the gift of the Holy Spirit had been poured out on the Gentiles also.
46For they heard them speak with tongues and magnify God.
Then Peter answered, 47"Can anyone forbid water, that these should not be baptized who have received the Holy Spirit just as we have?"
48And he commanded them to be baptized in the name of the Lord. Then they asked him to stay a few days.