EARLY CHURCH HISTORY 101 (Lesson 5)
After watching the Lord rise up before them enveloped by a cloud, the disciples removed from Mount Olivet and returned to Jerusalem per the Lord’s command. It was time to await the promise.
13 When they had entered the city, they went up to the upper room where they were staying; that is, Peter and John and James and Andrew, Philip and Thomas, Bartholomew and Matthew, James the son of Alphaeus, and Simon the Zealot, and Judas the son of James. 14 These all with one mind were continually devoting themselves to prayer, along with the women, and Mary the mother of Jesus, and with His brothers. 15 At this time Peter stood up in the midst of the brethren (a gathering of about one hundred and twenty persons was there together), and said…
This Upper Room was most likely in the house belonging to Mary, the mother of John Mark, as mentioned in the twelfth chapter of Acts after Peter’s miraculous release from certain execution:
…he went to the house of Mary, the mother of John who was also called Mark, where many were gathered together and were praying. [Acts 12:12] 
It was a very large room which, of course, implies a large house. This denotes Mary, a probable widow, as a woman of means. Mark was a cousin of Barnabas, the apostle Paul’s traveling partner, which made Mary his aunt. One can deduce that the respective fathers of Barnabas and Mark were brothers who were wealthy enough to (1) Own a large high end property in Jerusalem with servants, and (2) Send Barnabas, a man of letters with probable training under a rabbi to school. Barnabas was also the most likely writer of the Book of Hebrews.
The Last Supper was held in this same Upper Room, which made the private home a regular place of meeting for the Early Church. In fact, the entire Early Church at that time could take up residence within it. All eleven apostles were there along with possible family members. The Lord’s brothers were there, maybe all four, as was, of course, His mother Mary. Many other women were there, which must have included Mary Magdalene. With all of these together, it came to about 120 people, on the one hand a large group for a house church, but on the other relatively quite small.
After preaching to perhaps hundreds of thousands over a three and a half year period, having a large band of following disciples, and appearing to as many as five hundred after His resurrection, the Lord Jesus only gathered 120 dedicated praying disciples in the Upper Room awaiting the Day of Pentecost.
This should enlighten us to His selection process.
© 2020 by RJ Dawson. All Rights Reserved.
 Unless otherwise noted all Scriptures are taken from the New American Standard Bible, © 1960, 1963, 1968, 1971, 1972, 1973, 1975, 1977, 1995 by The Lockman Foundation. Used by permission.
Posted on April 6, 2020, in Teaching and tagged Acts of the Apostles, Apostles, Community of the Called-Out Ones, Discipleship, Early Church, Jerusalem, Lord Jesus, Mary, Peter, The Upper Room. Bookmark the permalink. 6 Comments.