Why is Acts 3 called an extension of Judaism rather than the beginning of the church?
Acts 3 reflects continuing Jewish temple worship, prayer at the ninth hour, and Messiah's healing power rather than church structure. It contains no church language, bishops, deacons, pastors, or instructions for God's house. Peter heals the lame man in Jesus Christ of Nazareth's name, continuing what Christ had been doing under the promised Spirit's power.
Les teaches that throughout these early chapters there isn't a word of Church language—no bishops, deacons, pastors, and no instructions on how to behave in the house of God. Most local churches get their ideas of church government from Paul, who describes the office of deacon, pastor requirements, and elders/deacons; here you don't. Les explains this is just an extension of Judaism: Temple, worship, prayer at the ninth hour, and now healing the lame man—not on the power of resurrection but on the power of the Messiah, the Christ, the Lord Jesus of Nazareth, the Son of God. In Acts 3:6 Peter takes the lame man by the hand and says, 'In the name of Jesus Christ of Nazareth, rise up and walk.' This is appropriate because he is continuing what Christ had been doing for three years, and Acts 1:8 promised the Holy Spirit's power to do what Jesus had been doing; Jesus told the Twelve the Spirit would not come until He left.