who was the first person to get baptised in the bible
Baptism in early Christianity This gospel, today generally believed by scholars to be the first[b] and to have been used as a basis for Matthew and Luke, begins with Jesus' baptism by John, who preached a baptism of repentance for forgiveness of sins. John says of Jesus that he will baptize not with water but with the Holy Spirit. At Jesus' baptism, he hears God's voice proclaiming him to be his Son, and he sees the spirit like a dove descend on him.
First Epistle of John The First Epistle of John, often referred to as First John and written 1 John, is the first of the Johannine epistles of the New Testament, and the fourth of the catholic epistles. It is attributed to John the Evangelist, traditionally thought to be the author of the Gospel of John and the other two Johannine epistles. This epistle was probably written in Ephesus in AD 95–110.[1] The work was written to counter docetism, which is the belief that Jesus did not come "in the flesh", but only as a spirit. It also defined how Christians are to discern true teachers: by their ethics, their proclamation of Jesus in the flesh, and by their love.[1]