Just wondering

I started reading the book of Acts today and noticed something in the footnote of my esv Bible version, namely, that when it talks about Jesus' brothers being in the upper room praying (Acts 1.14) that the Greek word can mean and most likely in this case does mean siblings. So Jesus' brothers and sisters are in the upper room praying. In verse 15 when Peter stands up among the brothers the same words is used--so the crowd he addresses and calls brothers is actually a mixed crew of men and women. All of this reminds me of the radically inclusive nature of Jesus' ministry where both men and women can be and in fact are disciples (see Luke 8). Along with this come the words of Acts 2.41 where we are told about 3000 are added to the Christian community on that first day of Pentecost--unlike the distinction when Jesus feeds the 5000 where we are told that there are 5000 men besides women and children, here we find a unity. It seems as we move into the book of Acts the separation between men and women disciples is being broken down and now there is just one group--followers of Jesus (see Galatians 3.28).

Along with this I also wondered about another group -- kids. It is interesting how few times we find children central to the story in both the gospels and Acts, not to mention the epistles. Are they part of the 3000 counted in Acts 2? I wonder if the lack of children being mentioned connects with the OT idea (Dt. 6) that children are taught by their parents and the covenant community so that the adults learn and become disciples by being with the Apostles and then they carry this not only to the world, but also to their children. Children are not mentioned very often because they are second in line in receiving the message and Acts is about those who are first in line. Not sure if this is right, but I was just wondering.