The book begins where Luke left off, with Jesus instructing the disciples to wait in Jerusalem until the coming of the Spirit (ch 1), and then follows the spread of the gospel by the power of the Holy Spirit from Jerusalem to the ends of the earth.
2:36-38
"Let all the house of Israel therefore know for certain that God has made him both Lord and Christ, this Jesus whom you crucified.”
Now when they heard this they were cut to the heart, and said to Peter and the rest of the apostles, “Brothers, what shall we do?” And Peter said to them,“Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit."
OBSERVATION
Emotion (2:37) "cut to the heart"
Who was cut to the heart?
Those listening to Peter.
What did Peter say to bring this about?
That the man they crucified was Lord and Christ.
How does Peter instruct them to respond?
Repent and be baptized for the forgiveness of their sins.
INTERPRETATION
What does this show about God's desires for these men?
He wants their sins to be forgiven and that they begin living life for him, no matter how bad their sins (and these men had committed the worst sin that we can imagine-crucifying Christ).
APPLICATION
Is there a timeless truth?
No matter how bad our past, God wants for us forgiveness and new life.