Who does Peter say the Jews are in Acts 3:25?

Les explains that in Acts 3:25 Peter tells the Jews, “You are the children of the prophets and of the covenant.” Les notes he is still hanging on Exodus 19:6 while moving to Acts 3:25. The covenant began with the one God made with their father Abraham, where God said, “In thy seed shall all the kindreds of the earth be blessed.” Peter therefore calls them the children of the covenants, starting with Abraham. Les then points to the next verse: “Unto you first, God, having raised up his son Jesus, sent him to bless you in turning every one of you away from his iniquities.” Les says God had it in mind that Israel was now in a position to accept their King, because the atoning work was made, Jesus was raised, and He had ascended according to Psalm 110:1, ready to come back if Israel would believe. Les also stresses how many times God made valid offers knowing they would not be accepted, such as Adam and Eve in the garden and Israel at Kadesh Barnea.