Therefore let all Israel be assured of this: God has made this Jesus, whom you crucified, both Lord and Christ." 37When the people heard this, they were cut to the heart and said to Peter and the other apostles, "Brothers, what shall we do?" 38Peter replied, "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. (Peter got this backwards didn't he according to Calvin)?? 39The promise is for you and your children and for all who are far off--for all whom the Lord our God will call." 40With many other words he warned them; and he pleaded with them, "Save yourselves from this corrupt generation." 41Those who accepted his message were baptized, and about three thousand were added to their number that day.
That is indeed powerful and all the elect responded to it..the reprobates still spiritaully dead did not!
How do I know? Well the Bible tells me that
Act 13:48 And when the Gentiles heard this, they were glad, and glorified the word of the Lord: and as many as were ordained to eternal life believed.
In Acts 2 Peter told every person there that the promise was for them. All of them. Yet they did not all believe and accept his words. Was he incorrect in saying that the promise was for all of them??