..be baptized every one of you in the name of Jesus Christ for the remission of sins...--Acts 2:38

Why It Matters

Why Salvation Matters
Mark 16:16
He that believeth and is baptized shall be saved; but he that believeth not shall be damned.

Why Doctrine Matters

Doctrine is essential in living the Christian life. Without doctrine a person will live according to the leading of their heart.

2nd Timothy 3:16-17
(16) All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: (17) That the man of God may be perfect, throughly furnished unto all good works.)
2nd Timothy 4:2-4
(2) Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine. (3) For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears; (4) And they shall turn away their ears from the truth, and shall be turned unto fables.

Why Baptism Matters
Acts 2:38-39
(38) And Peter said unto them, Repent ye, and be baptized every one of you in the name of Jesus Christ unto the remission of your sins; and ye shall receive the gift of the Holy Spirit. (39) For to you is the promise, and to your children, and to all that are afar off, even as many as the Lord our God shall call unto him.
1 Peter 3:21
(21) The like figure whereunto even baptism doth also now save us (not the putting away of the filth of the flesh, but the answer of conscience toward God,) by the resurrection of Jesus Christ:

Our Foundation

And are built upon the foundation of the apostles and the prophets, Jesus Christ himself being the chief corner stone. --Eph. 2:20
For there are three that bear record in heaven, the Father, the Word and the Holy Ghost: and these three are one. --1 John 5:7