John of Japan said:Look at the context here. The outline of Peter's message is, "This is a great event prophesied in Joel (vv. 14-21). You killed the Christ (22-23), but He rose again (24-28), and God once more exalted Him to His previous position as Lord of all" (29-36). It's a parallel to that wonderful passage in Phil. 2:5-13. At that time it was necessary for the Jews to know the complete truth about Christ, including His deity and His crowning as King of all, Lord of all. He had laid that down to die for all mankind, and the Father had restored Him to the throne.
1. Yes, I see what you are saying--again, it has to do with what questions we ask of a text.
But Peter gives an invitation that does not include "Receive Christ as Lord," even if you say that v. 21 teaches that. Peter's invitation is simply repent and be baptized (a symbol of the Gospel, of course). The message states that Christ is once again restored as King of kings, then says trust Him as Savior! Be baptized in what name? The name of Jesus the Christ.
The Lordship of Christ is a very powerful message that can lead very easily into a salvation message, as many other themes in Scripture can! I say let's preach the Lordship of Christ--but just not make it part of the Gospel as given in 1 Cor. 15:1-8! I'm told to preach the Gospel to every Japanese, and I do so as best I can. Sometimes I use the doctrine of creation, sometimes I use the law, sometimes the Lordship of Christ (especially that He is above all idols and ancestors). Recently in Sunday School I asked a lost woman who comes to our church, "What do you believe?" and she was so shocked she wept! She couldn't think of anything she actually believed! God uses many truths to bring people to Him.
2. But the command to repent and be baptized in the name of Jesus Christ no doubt points to His Lordship, but not a support of LS---good perspective John.