The Ministry of the Apostles Introduced (1:1-11). The former account refers to the Gospel of Luke, which was “volume one” of the two-volume work Luke-Acts (NET Study Notes). This understanding comes from both accounts addressing Theophilus as the recipient (cf. Luke 1:3). Luke, in his Gospel account, concentrated on the ministry of Jesus, but now draws attention to the apostles’ mission, empowered by the Holy Spirit, to serve as witnesses of Jesus’ resurrection (cf. 1:22; 2:32; 3:15). This ministry would begin in Jerusalem and eventually spread to the farthest parts of the earth.
Replacing a fallen apostle (1:12-26). After Jesus’ ascension to heaven, the apostles returned to Jerusalem staying in an upstairs room. They continued in prayer, together with the women, along with Jesus’ mother and his brothers (cf. John 7:5).This gathering of believers came to about one hundred and twenty people. Since Judas had become a guide for those who arrested Jesus and subsequently hung himself (Matthew 27:5), another witness from the beginning was called to take his position of responsibility. The Lord chose Matthias to serve as the twelfth witness of Jesus’ resurrection.
Are we willing to serve as witnesses of Jesus’ resurrection? Are we willing to publish this news to the farthest parts of the earth?