'Sure' in the Bible

I will fasten him like a nail in a sure place. He will be for a throne of glory to his father's house.

"In that day," says Yahweh of Armies, "the nail that was fastened in a sure place will give way. It will be cut down, and fall. The burden that was on it will be cut off, for Yahweh has spoken it."

Therefore thus says the Lord Yahweh, "Behold, I lay in Zion for a foundation a stone, a tried stone, a precious cornerstone of a sure foundation. He who believes shall not act hastily.

he will dwell on high. His place of defense will be the fortress of rocks. His bread will be supplied. His waters will be sure.

Turn your ear, and come to me; hear, and your soul shall live: and I will make an everlasting covenant with you, even the sure mercies of David.