In these examples where the word 'church' is used in its generic sense, such as "the horse is a big animal" as compared to "a horse". They are all talking about "the church" indicating either one church or several or all the existing churches.
None of them are referring and teaching things that have to do with the general population of saved souls, unless they are members of a church, like they are talking about, simply because their content is concerning things to do with churches and not saved people in general.
"After completing the story of the conversion of this arch persecutor, Saul, we are told
“the church throughout all Judaea, and Galilee and Samaria had peace, being edified.” This was the church at Jerusalem which was scattered,
Acts 8:1, the only church Scripture tells us he persecuted."
"We believe that the word ekklesia is used generically many times in the remaining passages and because some scholars have failed to recognize this a new meaning has been attributed to the word wrongly. Of the disputed passages we would like to take four first that deal with Paul’s persecution of the ekklesia. Some believe the word does not mean assembly in these passages but means about the same as disciples. Some would call it the invisible church which means it contains all Christians whether organized or whether they ever meet in assembly.
"The four passages are as follows:
"1 Cor.15:9 “because I persecuted the church of God”;
"Gal. 1:13 “how that beyond measure
I persecuted the church of God, and wasted it”;
"Phil. 3:6 “Concerning zeal, persecuting the church;”
"Acts 9:31 “So the church throughout all Judaea,
and Galilee and Samaria had peace, being edified.”
There was one church in Jerusalem at that time and Saul persecuted it, in the verse above.
Those individual members of the church at Jerusalem were scattered into other regions where new churches eventually were organized.
"1 Cor. 10:32, “Give none offence, neither to the Jews, nor to the Gentiles, nor to the church of God.” This passage is also disputed by some but the common meaning makes good sense and so a new meaning is not warranted."
"
Hebrews 2:12: “Saying, I Will declare Thy Name unto My brethren, in the Midst of the church Will I Sing Praise unto Thee.” Assembly makes good sense here; the question is to what ekklesia is it referring? This is speaking of Jesus and His church we believe and it refers to the time He instituted the Lord’s Supper.
Matthew 26:30: “And when they had sung an hymn, they went out into the 31 mount of Olives.”
"Some think this is too early for a church but why is it?
"Jesus had already declared He would build His ekklesia
(Mt. 16:18).
"He had given it a procedure for discipline
which assumed an ekklesia was already in existence
(Matt. 18:17).
"The members were baptized believers; they had the gospel
and had been preaching it and baptizing their converts.
"The essential elements of a New Testament church are seen in the gospels.
In
Acts 1 the disciples seem to be already organized
as they meet to decide on Judas’ successor to his office.
"The only answer that seems consistent with the information of the New Testament is that Jesus sang in the ekklesia begun during his earthly ministry when He gave it the second ordinance."
Quotes are from: https://static.secure.website/wscfus/3107401/2463194/overbeys-book.pdf, Written by my Greek and Hebrew Professor, the late Edward H. Overbey, B.A., B.D., D.D.
One teaching is below;
And a second teaching is below here;
1 + 1 does not equal 1.
1; a specific local assembly + 1; the totality of all Christians throughout history = 2.
"There is one body, and one Spirit,
even as ye are called in one hope of your calling" Ephesians 4:4.
Yep, they were passed around to the various churches,
because they had to do with church business. We have to assume that most everyone who got saved in those days got baptized into one of the churches, just guessing practically.