He was a prophet and knew God had promised him that he would make a person from David's family a king just as he was.
Knowing this before it happened, David talked about the Christ rising from the dead. He said: 'He was not left in the grave. His body did not rot.'
So Jesus is the One whom God raised from the dead. And we are all witnesses to this.
Jesus was lifted up to heaven and is now at God's right side. The Father has given the Holy Spirit to Jesus as he promised. So Jesus has poured out that Spirit, and this is what you now see and hear.
David was not the one who was lifted up to heaven, but he said: 'The Lord said to my Lord, "Sit by me at my right side,
until I put your enemies under your control."'
"So, all the people of Israel should know this truly: God has made Jesus -- the man you nailed to the cross -- both Lord and Christ."
When the people heard this, they felt guilty and asked Peter and the other apostles, "What shall we do?"
Peter said to them, "Change your hearts and lives and be baptized, each 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.
This promise is for you, for your children, and for all who are far away. It is for everyone the Lord our God calls to himself."
Peter warned them with many other words. He begged them, "Save yourselves from the evil of today's people!"