Fortner walks through the book of Acts verse by verse to offer up a commentary on the apostles following the ascension of Jesus.
"3. FAITHFUL BUT FALLIBLE LEADERS
Acts 1:12-26 covers a brief waiting period (about one week) between the ascension of Christ and the outpouring of the Holy Spirit on the day of Pentecost. The things that are recorded here were written by Luke, by divine inspiration, for our learning and admonition. If we are wise, we will lay them to heart.
First, THE LORD JESUS CHRIST FULFILLED EVERY PROPHECY OF THE OLD TESTAMENT SCRIPTURES RELATING TO HIS INCARNATION, LIFE, EARTHLY MINISTRY, CRUCIFIXION, RESURRECTION, AND ASCENSION (v. 12). When Luke tells us that the disciples returned from the mount called Olivet to Jerusalem, he is, almost casually, telling us that Christ stood upon Mt. Olivet when he ascended to heaven, just like the prophet Zechariah said he would (Zech. 14:4; Ezek. 11:23). The mount had been divided in two parts by a great earthquake in the days of Uzziah. Our Lord ascended from that part of it which was near Bethany (Luke 24:50). It was there that he began his sufferings (Luke 22:39). It was most fitting therefore that he should cast off the reproach of his sufferings there by his glorious ascension."