Part One About Baptism
Our bases for structure: Acts 1:4-5 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me. 5 For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence. In Acts 1:5-8, Jesus uses the term Holy Ghost in regard to baptism.
When you look at the Holy Ghost and the Holy Spirit there is a difference. When Jesus is referring to the Spirit as sent from the Father (Acts 2:33, John 14:26) he uses the term Holy Spirit. When Jesus refers to Himself, as in Acts 1:4-5 He uses the Holy Ghost.
Romans 10:9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
This statement when isolated can be twisted to mean that someone can be saved by simply repeating these words. This is not true. This statement has to be looked at in context.
Baptism is needful for the remission of sins. But baptism is a symbolic burial with Christ. One must be conscious of why they are getting baptized. In Catholicism, infant baptism is done, however being an infant, the individual would not be aware of why they are being baptized. A person must first be convicted, repent, and be baptized in order to be saved. Before they are convicted, they had to have heard about Jesus and been taught about Him.