Re: Magnificat...

1 Corinthians 12:13
For we were all baptized by one Spirit into one body—whether Jews or Greeks, slave or free—and we were all given the one Spirit to drink.

- This verse does not take anything away from the fact that Jesus built his One Church upon his chosen Apostle St. Peter.

Romans 12:5
so we, though many, are one body in Christ, and individually members one of another.

- Again this verse does nothing to detract from the fact that Jesus built his One Church upon his chosen Apostle St. Peter.

Ephesians 5:25
25Husbands, love your wives, as Christ loved the church and gave himself up for her, 26that he might sanctify her, having cleansed her by the washing of water with the word, 27so that he might present the church to himself in splendor, without spot or wrinkle or any such thing, that she might be holy and without blemish.

- And yet again this verse does nothing to detract from the fact that Jesus built his One Church upon his chosen Apostle St. Peter