No matter the audience, location, time, or date, Peter's sermons in Acts 2, 3, 4, and 5 contain the exact same core gospel message. Paul's banner in Romans 1:16 states that he is unashamed of the gospel, for it is the power of God for salvation to everyone who believes... 2,000 years later, the message that is the power of God for salvation is no different than it was at Pentecost. Peter helps us find the non-negotiable core of this message with refreshing clarity.