Who was Peter preaching to on the day of Pentecost and under what system?
On the day of Pentecost, Peter preached to the nation of Israel—Jews gathered who knew the Old Testament—and he addressed them as "Ye men of Israel." This preaching occurred while Israel was still under the law. They were taught in the law and the Old Testament prophets.
Les explains, using Acts 2:22–23, that Peter is preaching on the day of Pentecost to the nation of Israel, still under the law. He points out that Peter calls them "Ye men of Israel." These Jews knew their Old Testament; they had been taught the law and the Old Testament prophets, even though they were in rank unbelief. Les says he repeats these verses because they are fundamental to understanding everything.
Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know:
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