36 “Therefore let all the house of Israel know assuredly that God has made this Jesus, whom you crucified, both Lord and Christ.” 37 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 2:36–37, NKJV)
When convicted that Jesus is Lord and Christ, sinners were cut to the heart for their sins against Him. Their urgent question was, “What shall we do?” The answer Peter gave was clear: Repent and be baptized (Acts 2:38). Today, people give different answers to the same question. Some say, “You can’t do anything – God must do everything for you to be saved.” That is not what Peter said. Some say, “Believe and pray the sinner’s prayer, and you will be saved.” That is not what Peter said. Some say, “God has already elected who will be saved and who will be lost, so whatever you do will not change your fate.” That is not what Peter said. Some say, “Plead for Holy Spirit baptism in addition to being baptized in water so you can be fully sanctified.” That is not what Peter said. Why not just do what Peter said? About three thousand believers were saved that day when they repented and were baptized (Acts 2:40-41). The way to be saved by Christ has not changed. The need for salvation is the same. The answer to the question, “What shall we do?” is the same. This is gospel salvation. Believe it. Obey it. Be saved by Christ.
37 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?” 38 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 2:37–38, NKJV)
In answer to the question posed by the murderers of Jesus (Acts 2:36), Peter did not tell them to “just accept Jesus as your personal Savior, and you will be saved.” (They evidently already believed Jesus to be “both Lord and Christ,” because they are convicted of their sin against Him. You cannot be convicted about something you do not believe.) Peter did not tell them to “pray the sinner’s prayer” to be saved. (Yet, that is what many tell sinners to do about their sins.) Peter did not tell them, “There is nothing you can do to save yourselves. God has done everything.” (But, many tell sinners they are completely passive in their salvation.) Peter did tell them to repent. These believers were not yet saved; they needed to repent, or they would not be saved. Peter also told them to be baptized “for the remission of sins.” Just as one must believe and repent to be saved, one must also be baptized to be saved. Instead of accepting doctrines that deny and oppose this simple passage about how to be saved, why not believe it, obey it, and be saved? When you believe, repent and are baptized, God will remove your sins, just like He did theirs.