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?" 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. For the promise is to you and to your children, and to all who are afar off, as many as the Lord our God will call." And with many other words he testified and exhorted them, saying, "Be saved from this perverse generation."
Acts 2:37-40

Remission of sin and the gift of the Holy Spirit is a promise.

Who receives will this promised gift? All who believe and repent—demonstrated by obeying the command to be baptized—will receive remission of sin and the gift of the indwelling Holy Spirit.

Who receives will this promised gift? “The promise is to you.” It was for those standing there hearing the promise, and who believed and repented—demonstrated by obeying the command to be baptized.

Who receives the promise? “The promise is to you and your children.” Not merely to those who are the biological offspring of believers, but of the children of believers if they too believe and repent—demonstrated by obeying the command to be baptized.

Who receives the promise? “The promises is to… all who are afar off.” It was not limited to the people standing there that day and their children, but also to all people everywhere who believe and repent—demonstrated by obeying the command to be baptized.

Who receives the promise? “The promises is to… as many as the Lord our God will call.” The bottom line is that the promise is to all who are called by God to hear the gospel and obey the gospel by believing and repenting—demonstrated by obeying the command to be baptized.

The promise is for you and for your children—if you and they will believe and repent—demonstrated by obeying the command to be baptized. Have you? Have they?