With this being said I want to touch on why baptism is a necessary part of salvation. There's no denying that that baptism and salvation were inseperable in the New Testament. Most people argue for the symbolic expression of baptism, and then move on to say that if it's just expression we don't HAVE to have it.
But then you get to Romans 6 that explains baptism is our death to the old life and birth to life in Christ. The death that Jesus died was once for all mankind...
Romans 6:10 10 For the death that He died, He died to sin once for all; but the life that He lives, He lives to God.
...but until each man dies himself he cannot partake of the eternal life offered by Christ.
Romans 6:4 4 Therefore we were buried with Him through baptism into death, that just as Christ was raised from the dead by the glory of the Father, even so we also should walk in newness of life.
The ONLY place the Bible speaks of us dying to ourselves and becoming new is through...any guesses? Baptism - a literal act demonstrative of our dying, being buried, and rising to walk in newness of life (Romans 6:4).
Baptism is the moment when our sins are forgiven:
Acts 2:38 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.
Baptism is the moment we become clothed in Christ:
Galatians 3:27 27 For as many of you as were baptized into Christ have put on Christ.
Baptism is the moment when we are added to the body:
Acts 2:41 41 Then those who gladly received his word were baptized; and that day about three thousand souls were added to them.
1 Corinthians 12:13 13 For by one Spirit we were all baptized into one bodywhether Jews or Greeks, whether slaves or freeand have all been made to drink into one Spirit.
Baptism, then, can be described by Peter in 1 Peter 3:21 as saving us- not because of its physical action (removal of the dirt from the body), but because it is our appeal to God for a clean conscience through the resurrection of Christ.
I Peter 3:21 21 There is also an antitype which now saves usbaptism (not the removal of the filth of the flesh, but the answer of a good conscience toward God), through the resurrection of Jesus Christ,
Baptism is an act of obedience that is commanded in the New Testament. Every word I just typed (whew) is scriptually accurate.