In Acts chapter two, Peter and the rest of the apostles were in the temple on the Day of Pentecost as would be expected. We learn this from Luke 24:53, "Now it came to pass, while He blessed them, that He was parted from them and carried up into heaven. And they worshiped Him, and returned to Jerusalem with great joy, and were continually in the temple praising and blessing God." There would have been no women present in the temple. Women were not traditionally permitted beyond the courtyard of the women. The only ones present in the temple were men as is confirmed by verse 14, "Men of Judea and all who dwell in Jerusalem, let this be known to you, and heed my words. " And in verse 22, "Men of Israel, hear these words ." The word in both verses is ἀνδρός which is gender specific. There is not even the suggestion that there were any women present in this assembly.
In chapter 2, they are in the upper room, then chapter 2 talks about the place that they were sitting. Could Luke have switched venues without telling the reader? I suppose so. I imagine crowds out in the streets which are full because of the feast. But one might imagine the temple courts. That isn't specified.
You are correct in that the KJV and others correctly translate ἕκαστος as "everyone." However, ἕκαστος is masculine spelling, not feminine or neuter. It is, therefore, gender specific. Thiis does not mean that women were excluded from being baptized. It merely shows that the audience being addressed were men just as verses 14 and 22 demonstrate.
It may be something you can't really prove solidly either way. But I have not read Mussie's book. I wonder if the adjective v. noun argument of his you mentioned holds up when looking at parallel issues with other words. Insisting all the baptizees be men and insisting on a temple location may be a bit of a stretch. The writer and some readers may have had some background information in common with Luke.
It is important to remember that in Greek, the use of masculine and feminine does not always signify gender.
It is very often used to imply role or function when applied to an inanimate object such as the sun mentioned earlier is verse 40. The idea of masculine and feminine represent the idea of the subordinate and dominate roles. Man and woman is merely a reflection of this concept and does not represent it entirely. While the Church is feminine, thus occupies the subordinate role, it is not woman. While God is always represented in the dominate masculine position, he is not man.
Verse one does not stand alone. The antecedent of "they were all with one accord in one place" is the apostles who were the focus of Acts 1:26.
You said, "I Corinthians 11 mentions women prophesying in the context of traditions and ordinances, and it comes before a discussion of a church gathering activity."
Since this prohibition comes from the Lord and not from Paul, it does not matter in which order these appear. This is a revealed principle from the Almighty regarding the function and behavior of both men and women in the Church.
Since this prohibition comes from the Lord and not from Paul, it does not matter in which order these appear. This is a revealed principle from the Almighty regarding the function and behavior of both men and women in the Church.
It is most explicit. "Whenever you come together "... "in church"... " it is shameful for women to speak in church."
So what does he mean? No amens? No singing songs? No engaging in the aforementioned mutually edifying activities (your position)? Could he be referring to a specific problem that had to do with asking questions in appropriately and either creating a disturbance or doing something that challenged their husbands role? Again, the reasoning here is women can prophecy, it is one of the activities in the passage, it is for the overall profit of the church. If there is some venue where women can exercise this gift, then what keeps it from being 'church'? Can only less than three people present? Does the whole city have to gather?
If you have a gathering with less than all the saints of the city, would all the I Corinthians 14 restrictions apply 'when ye all come together into one place' in verse 26, but Paul writes the letter broadly to all who believe in Jesus also, while addressing it to the church in Corinth.
The purpose of the coming together of the Church seems to be in the context of praise and worship.