'Sure' in the Bible

“Please, my lord,” she said, “as sure as you live, my lord, I am the woman who stood here beside you praying to the Lord.

“Look,” the attendant said, “there’s a man of God in this city who is highly respected; everything he says is sure to come true. Let’s go there now. Maybe he’ll tell us which way we should go.”

Then David said to Abiathar, “I knew that Doeg the Edomite was there that day and that he was sure to report to Saul. I myself am responsible for the lives of everyone in your father’s family.