As to the previous post about Baptism, there is but one Baptism according to Eph. There is one Lord, One Faith and One Baptism. We are immersed into water and Salvation follows. That is what the Word teaches. James says that faith without works is dead, so we need to show our faith by our actions.
Baptism is essential.
The New Testament teaches and shows repeatedly that it is necessary. It is part of faith.