Dathan ~An Israelite mentioned in the Old Testament as a participant of the Exodus. He was a son of Eliab, the son of Pallu, the son of Reuben. Together with his brother Abiram, the Levite Korah and others, he rebelled against Moses and Aaron. Numbers relates that, "the earth opened her mouth, and swallowed them up, and their houses." -Numbers 16:31)
Whoa! what a foolish thing to rebel against God so blatantly.....maybe this is what is meant as "stiff-necked"