I understand where you're coming from...but in all honesty the first thought that came to mind reading your response was this:
Matthew 18:20 "For where two or three are gathered together in my name, there am I in the midst of them."
Any other day of the week any hour either side of the service...it's a secular building.
But during the time this happened...it's a House of God.
I think there is a slight possibility that you are splitting hairs.
Anyway, I don't liked to see the great First Baptist Church of Dallas maligned because it has been a force of good for over a hundred years in Dallas. I don't like the current pastor... he is a hate monger but that shouldn't take away from the good that Church has done.
I looked it up because I could not remember the names of the two great pastors... Truett and Criswell. Criswell is the one that helped my relative.
First Baptist Dallas is a Southern Baptist megachurch located in Dallas, Texas. It was established in 1868 and, as of 2016, has a congregation of about 12,000.[1] The church, considered influential among evangelical Christians in the United States,[1] also owns and operates a school, several radio stations, and Dallas Life, a mission for the homeless on the southern edge of Downtown Dallas. The current pastor is Robert Jeffress. Jeffress is currently leading the congregation in a $130 million campaign to re-create its downtown campus. The project is the largest in modern church history.
In 1897, the first of the two most notable pastors, George Truett, accepted the position of Pastor and remained there until his death in July 1944. In 1944, Dr. W.A. Criswell became the pastor of the church. During his tenure, the church expanded to multiple buildings covering five blocks in Downtown Dallas, eventually becoming the largest Southern Baptist church in the world. Dr. Criswell became Senior Pastor in 1990 and Pastor Emeritus from 1995 until his death in 2002. Since 1990, four pastors have held the pulpit: Joel Gregory, O.S. Hawkins, Mac Brunson, and, currently, Robert Jeffress.