Real Talk with Roderick
While We Wait (Acts 1:9-14)
Obey (Acts 1:9-11)
His final words are the "these things" (ταῦτα εἰπὼν) from Acts 1:4-8. Among these things are two commands: (1) wait for baptism (Acts 1:4) and then (2) be witnesses (Acts 1:8). Regarding the latter, God's goal of having witnesses for Himself is ancient (Deuteronomy 4:6; 30:19); even Creation is called to serve Him in this capacity (Psalm 19:1-6; Romans 1:19-20). If there is no one ready to raise their voice to declare God's goodness the stones under our feet are ready to do the job (Habakkuk 2:11; Luke 19:40). It was to this great work that Israel was called out from among all peoples - to bear witness to the nations. But where Israel failed to fulfill this calling the Son of God succeeded (Luke 4:16-19). And those that become His disciples take up His work by becoming His witnesses. When describing the ongoing witnessing mission in the work of Jesus and the life of His disciples FF Bruce says it well:
The close relation between God’s call to Israel, “you are my witnesses,” and the risen Lord’s commission to his apostles, “you will be my witnesses,” can be appreciated the more if we consider the implications of Paul’s quotation of Isa. 49:6 in Acts 13:47.32 There the heralds of the gospel are spoken of as a light for the Gentiles, bearing God’s salvation “to the end of the earth”; here “the end of the earth” and nothing short of that is to be the limit of the apostolic witness.
Bruce, F. F. (1988). The Book of the Acts (p. 36). Grand Rapids, MI: Wm. B. Eerdmans Publishing Co.
Regarding the command to be witnesses (Matthew 28:18-20; Acts 1:8), the heavenly hosts are leading by example and encouraging the disciples to get going with the work:
Luke intends his readers to understand these men to be angelic messengers, like the two men who appeared to the women at the empty tomb of Jesus “in dazzling apparel” (Luke 24:4).39 In both instances the fact that there were two suggests that they are viewed as witnesses, two being the minimum number for credible witness-bearing (Deut. 19:15). On the former occasion the two men bore witness to Jesus’ resurrection; here they bear witness to his forthcoming parousia.
Bruce, F. F. (1988). The Book of the Acts (p. 38). Grand Rapids, MI: Wm. B. Eerdmans Publishing Co.