Peter preached a murder indictment to all the house of Israel. He did not glory in the cross. He preached it as a shame. And did you notice, Peter did NOT preach "that Christ died for our sins"?!
John the Baptist did and the teachings of the temple said it.
Joh 1:29 The next day John seeth Jesus coming unto him, and saith, Behold the Lamb of God, which taketh away the sin of the world.
Luk 24:25 Then he said unto them, O fools, and slow of heart to believe all that the prophets have spoken:
Luk 24:26 Ought not Christ to have suffered these things, and to enter into his glory?
Luk 24:44 And he said unto them, These are the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law of Moses, and in the prophets, and in the psalms, concerning me.
Luk 24:45 Then opened he their understanding, that they might understand the scriptures,
Luk 24:46 And said unto them, Thus it is written, and thus it behoved Christ to suffer, and to rise from the dead the third day:
Luk 24:47 And that repentance and remission of sins should be preached in his name
among all nations, beginning at Jerusalem. LA