Acts of Jesus through the Holy Spirit
Acts tells the story of Jesus as he establishes the Christian Church. The initial event is described in Chapter 2.
Chapter 2 tells us that the twelve Apostles and others were all gathered in one place and were filled with the Holy Spirit.
The Holy Spirit produced a change in the Apostles converting them from dazed and wondering followers into focused and convicted leaders.
This leadership is immediately displayed by Peter. In verse 14,
Peter stood up with the eleven and declared that "Everyone who calls on the name of the Lord will be saved."
In verse 23 and following Peter declares to the gathered people, "Jesus of Nazareth was a man accredited by God to you by miracles, wonders and signs which God did among you through him..."
"This man was handed over to you by God's set purpose and foreknowledge; and you, with the help of wicked men, put him to death by nailing him to the cross."
"But God raised him from the dead, freeing him from the agony of death, because it was impossible for death to keep hold of him."
Then in verse 36 Peter makes the definitive declaration, that is the evidence of his total conversion and newly affirmed conviction. He says,
"Therefore, let all Israel be assured of this: God has made this Jesus, whom you crucified, both Lord and Christ."
When Peter proclaims Jesus as both LORD and CHRIST he is fulfilling the purposes of the Holy Spirit.
Lord is a translation of the Word "Kurios" and Christ is a translation of the word for Messiah.