Our Purpose: Evangelism
Introduction
Fact 1: Power is Given Unto Us
The power they were to receive was divine power; the word is dynamis, the same word used of Jesus’ miracles in the Gospels. It is the Spirit’s power (2:1–21). The endowment with the Spirit is the prelude to, the equipping for, mission.
Fact 2: Witnessing is Part of Our Being
The role of the apostles is that of “witness” (martys). In Acts the apostles’ main role is depicted as witnessing to the earthly ministry of Jesus, above all to his resurrection (cf. 1:22; 2:32; 3:15; 5:32; 10:39, 41). As eyewitnesses only they were in the position to be guarantors of the resurrection. But with its root meaning of testimony, “witness” comes to have an almost legal sense of bearing one’s testimony to Christ
An Old Testament prophet had called the people of Israel to be God’s witnesses in the world (Isa. 43:10; 44:8); the task which Israel had not fulfilled was taken on by Jesus, the perfect Servant of the Lord, and shared by him with his disciples.