So you are saying baptism has nothing at all to do with cleansing of sins?
It is ultimately through faith in Jesus Christ and his blood, not the water itself, that sins are cleansed.
So who gave John the authority to preform baptisms?
According to the Gospel of John (1:33),
John the Baptist received his authority to baptize directly from God. He was sent with a divine mission to prepare the way for the Messiah, acting as a prophet with authority from heaven rather than from men.
And who baptised John?
There is no record in the New Testament of anyone baptizing John the Baptist
. He is considered the initiator of his own baptism ministry, directly commissioned by God.