'Lifting' in the Bible

Who is this coming up like the Nile, whose waters are lifting their heads like the rivers?

Egypt is coming up like the Nile, and his waters are lifting their heads like the rivers, and he says, I will go up, covering the earth; I will send destruction on the town and its people.

And Moab will come to an end as a people, because he has been lifting himself up against the Lord.