Baptism is a submersion or a dipping into water, a realm of authority or a spiritual domain. It's likened to death and resurrection. You can be baptised into the teachings of somebody the way a wife is baptised into the words of her husband. He washes her as a spiritual ablution, with the washing of water which is the word of God. Eph 5:26 NET to sanctify her by cleansing her with the washing of the water by the word,