'Surely' in the Bible

The servant said to him, “Look here, in this city there is a man of God, and the man is held in honor; everything that he says comes true. Now let us go there; perhaps he can advise us about our journey [and tell us where we should go].”

For as the Lord lives, who saves Israel, for even if the guilt is in my son Jonathan, he shall most certainly die.” But not one of all the people answered him.

Saul answered, “May God do so [to me], and more also [if I do not keep my word], for you shall most certainly die, Jonathan.”

Then Samuel said, “Bring me Agag, the king of the Amalekites.” And Agag came to him cheerfully. And Agag said, “Surely the bitterness of death has come to an end.”

So it happened, when they had come, he looked at Eliab [the eldest son] and thought, “Surely the Lord’s anointed is before Him.”

The men of Israel said, “Have you seen this man who is coming up? Surely he is coming up to defy Israel. The king will reward the man who kills him with great riches, and will give him his daughter [in marriage] and make his father’s house (family) free [from taxes and service] in Israel.”

Yet Saul did not say anything that day, for he thought, “It is an incident [of some kind] and he is not [ceremonially] clean—surely he is unclean.”

For as long as the son of Jesse lives on the earth, neither you [as heir to the throne] nor your kingdom will be established. So now, send [someone] and bring him to me, for he must die.”

But Saul said, “Be assured that you shall die, Ahimelech, you and all your father’s household (extended family).”

Then David said to Abiathar, “I knew that day, when Doeg the Edomite was there, that he would certainly tell Saul. I have brought about the death of everyone in your father’s household (extended family).

Then David said, “O Lord, the God of Israel, Your servant has heard for certain that Saul intends to come to Keilah, to destroy the city on my account.

Now, behold, I know that you will certainly be king and that the kingdom of Israel will be established in your hand.

Now David had said, “Surely in vain I have protected and guarded all that this man has in the wilderness, so that nothing was missing of all that belonged to him; and he has repaid me evil for good.

Nevertheless, as the Lord the God of Israel lives, who has prevented me from harming you, if you had not come quickly to meet me, most certainly by the morning light there would not have been left to Nabal so much as one male.”

Then Saul said to David, “May you be blessed, my son David; you will both accomplish much and certainly prevail.” So David went on his way, and Saul returned to his place.

Then Achish called David and said to him, “As the Lord lives, you have been upright (righteous), and your behavior in the army is pleasing in my sight. For from the day you came to me to this day I have found no evil in you. Nevertheless, the [Philistine] lords do not approve of you.

David inquired of the Lord, saying, “Shall I pursue this band [of raiders]? Will I overtake them?” And He answered him, “Pursue, for you will certainly overtake them, and you will certainly rescue [the captives].”