Baptism in early Christianity

 Warren Wiersbe notes that New Testament scholars "generally agree that the early church baptized by immersion".
Thomas Schreiner likewise states that "Most scholars agree that immersion was practiced in the NT", identifying submersion as the form of immersion practiced.
Heyler says most New Testament scholars generally agree that Christian baptism in the New Testament era was by immersion.
Everett Ferguson similarly speaks of "general scholarly agreement" that the baptism commanded by Jesus was immersion in water by dipping, in the form of a "full bath". He describes medieval depictions of Jesus standing in water while John poured water over him as a "strange fantasy" deriving from later church practice.
Di Berardino describes the baptism of the New Testament era as generally requiring total immersion, and Lang says "Baptism in the Bible was by immersion, that is, the person went fully under the waters".