Straw man argument.
Baptism does not remove our sins literally, but figurately. Mormons practice baptism for the dead.
All of Paul's letters are addressed to believers and not to the unsaved, yet that does not mean that you can't find the unsaved mixed in with the saved, professing to be saved. There are genuine Christians and there are "nominal" or pseudo-Christians. There are genuine believers and there are make believers and it's not hard to find them mixed together throughout scripture, throughout various churches today and on various Christian forum sites.
They were saved by believing the gospel by trusting in the death, burial and resurrection of Jesus Christ as the ALL-sufficient means of their salvation. When will you believe?
When we read Acts 2:38 alongside verses like (
Luke 24:47;
Acts 3:19;
5:31;
10:43-47;
11:17,
18;
13:38-39;
15:7-9;
16:31;
26:18) we find that
forgiveness is explicitly tied to
repentance/belief/faith and not baptism. In regard to Acts 8:12-17, Simon the sorcerer is said to have “believed and was baptized” at the preaching of Philip (
Acts 8:13)
BUT later, when
Simon offers the apostles money to have their ability to impart the Holy Spirit (verses 18–19), he is
rebuked by Peter. Peter answered:
"May your money perish with you, because you thought you could buy the gift of God with money! You have
no part or share in this ministry, because your heart is not right before God. 22
Repent therefore of this your wickedness, and pray God if perhaps the thought of your heart may be forgiven you. 23
For I see that you are poisoned by bitterness and bound by iniquity. (verses 20-24) Bogus conversion!
In regard to the Samaritans in this unique case, in which receiving the Holy Spirit was delayed until the apostles themselves could be present to lay hands on them and therefore there would be no question that God had accepted the Samaritans into the church along with the Jews. Exception but not the rule. I'm surprised that you don't "add" must have hands laid on you in order to be saved as well through your cherry-picking method of hermeneutics.
What a ridiculous question.