'Surely' in the Bible

"I will surely destroy everything from the face of the earth"--a declaration of Yahweh.

Therefore as I live, saith the LORD of hosts, the God of Israel, Surely Moab shall be as Sodom, and the children of Ammon as Gomorrah, even the breeding of nettles, and saltpits, and a perpetual desolation: the residue of my people shall spoil them, and the remnant of my people shall possess them.

"Now as for you, Cush, you will surely be slain by my sword!

I said, Surely thou wilt fear me, thou wilt receive instruction; so their dwelling should not be cut off, howsoever I punished them: but they rose early, and corrupted all their doings.