Baptism is Essential for Salvation

Believe the Bible. It is the infallible word of God. Baptism's importance is clear. Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death? Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life. -Romans 6:3-4

When we read this, we can see baptism isn't just a symbol of an inward faith. It is the one thing that unites us with the salvation of Christ. It is how one is born again. Without it, we are rejecting our admission ticket to heaven, so to speak. Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God. -John 3:3  The new birth of water and spirit happens at baptism.

The Holy Spirit renews us and transforms our lives through the washing and regeneration. Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost; -Titus 3:5  Baptism itself is grace in action. God forgives sin and only through Christ's sacrifice. We are physically buried in water, and this unifies us spiritually with Christ's grace. Baptism is essential for salvation precisely because Christ is essential for salvation.

We are baptized to wash away our sins (And now why tarriest thou? arise, and be baptized, and wash away thy sins, calling on the name of the Lord. -Acts 22:16) so we can be added to the Lord's church (For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit. -I Corinthians 12:13) which He purchased with His blood. Praising God, and having favour with all the people. And the Lord added to the church daily such as should be saved. -Acts 2:47)