according to scripture
So lets start by outlining if you have Christ then you have God. This is the doctrine of Christ also known as the Godhead doctrine. The sum of it is that God is one man there is no separate persons in the word of God for the Lord. The word
salvation
Here is the simplicity of the gospel... 1 Corinthians 15:3-4 KJV For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures; (4) And that he was buried, and that he rose again the third day
salvation
The Baptism that saves us today is of the Spirit not of water. We must rightly divide the matter in scripture (2 Timothy 2:15 KJV), because there are different baptisms that are for different purposes throughout the New Testament. But there is only one baptism for us today that