Therefore let all the house of Israel know assuredly that God has made this Jesus, whom you crucified, both Lord and Christ (Acts 2:36 NKJV).
Jesus is both Lord and Christ! We like to emphasize the "Christ" part, but we must also remember the "Lord" part.
When the people heard Peter's words, the Bible tells us, they were convicted:
Now when they heard this, they were cut to the heart, and said to Peter and the rest of the apostles, "Men and brethren, what shall we do?" (Acts 2:37)
Peter's answer to them is the part of the gospel that often gets left out:
Then Peter said to them, "Repent, and let every one of you be baptized in the name of Jesus Christ for the remission of sins; and you shall receive the gift of the Holy Spirit" (Acts 2:38).
A minister with a heart for world evangelism has characterized American Christianity as sometimes having a negative impact, almost like an errant "virus," in countries where it has been exported. He says that quite often, "We preach a gospel that offers faith without repentance, grace without the fear of God and destiny without discipleship" (Rice Broocks).
We should not only see the gift of God in the Messiah come to earth, but also surrender to Jesus the Lord. Have you repented? Is He your Lord? May I ask "have you ever repented and surrendered to His Lordship?" This is a great time to live and to sing, "Jesus, Lord at Thy birth!"