Scribes Who Changed the Voice at Jesus Baptism?

I have been discussing views in the early church that asserted (or were claimed to assert) that Christ was not a divine being by nature, but was only “adopted” to be the Son of God, for example at his resurrection or, more commonly, at his baptism. Some such views were allegedly held by the Jewish-Christian Ebionites and by the Roman-gentile Theodotians. Whether these Christians actually held to such views is a bit difficult to say, since we don’t have any writings from their hands. But it is...