'Sudden' in the Bible

Therefore the Lord God says this,“Listen carefully, I am laying in Zion a Stone, a tested Stone,A precious Cornerstone for the [secure] foundation, firmly placed.He who believes [who trusts in, relies on, and adheres to that Stone] will not be disturbed or give way [in sudden panic].

“They will not labor in vain,Or bear children for disaster;For they are the descendants of those blessed by the Lord,And their offspring with them.