[Mom MD]

I have not heard the the term Holy mother church used in the LCMS in the last 57 years so it is not common today. I will ask again - can you provide even one scriptural reference to the mother church?

[Al Hitan]

I have not heard the the term Holy mother church used in the LCMS in the last 57 years

Well, now you’ve seen it used in 2019 in the two examples I linked, once by an LCMS pastor and once by an LCMS district president.

Remove the plank from your eye and maybe you could see better.