Everyone need to go through the physical baptism first, as a child begin to the Word(CHRIST), before growing through the New Testament teachings of commandments and instructions of 'spirit' and 'life' and continue in practice to them, in our own saved lives first, in order to remove the 'log' in our own eyes, before we are able to see clearly, Then we are able to further achieve knowledge of the 'full truth' and practice the works of Spiritual baptism, by forsaking and die to 'self', even it takes day by day.
Then the HOLY SPIRIT will manifest as the 'living water' in such obedient and submissive person, witnessing to the lost world, and even willingly would lay down one's life, like JESUS CHRIST of Nazareth, even to shedding of one's blood and death, for GOD's Good works.