'Riseth' in the Bible

And Ishmael son of Nethaniah riseth, and the ten men who have been with him, and they smite Gedaliah son of Ahikam, son of Shaphan, with the sword, and he putteth him to death whom the king of Babylon hath appointed over the land.

Who is this that riseth up as the Nile, whose waters toss themselves like the rivers?

Egypt riseth up like a flood, and his waters are moved like the rivers; and he saith, I will go up, and will cover the earth; I will destroy the city and the inhabitants thereof.