The person is confusing ordinance with place of baptism. Phillip could have been under the authority of the church which would allow him to baptize outside of the church. Baptism (including Jesus') doesn't have to take place within a church.

It is a logical stretch to say that Philip didn't baptise in a church to mean "we shouldn't baptize in the church."

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J. B. Atken
John Knox PCA
Layman, M.A. student at Louisiana College