What you fail to understand is it is not WATER baptism which does those things, But the actual baptism of God himself.
Even John understood this, He will baptize with the HS and fire. Who do you think Jesus was going to baptise? If your not baptized by him, your not washed, if your not washed, your still dead in your sin.
John 4:2 (NKJV) (though Jesus Himself did not baptize, but His disciples),
Yet who did Jesus commission to baptized? He dose not say "Go, I will baptized", He sent disciples, to make disciples,
Matthew 28:19 (NKJV) Go therefore and make disciples of all the nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit,
You cannot get past the fact Jesus did not say He would baptize anyone in the great commission, He sent his disciples, and His disciples Like John could only baptize with water (Mat 3:11, Luke 3:16)