When Saul saw David going out to fight Goliath, he asked Abner, the commander of his army, "Abner, whose son is he?" "I have no idea, Your Majesty," Abner answered.

But David answered, "Your father knows very well how much you like me, and he has decided not to let you know what he plans to do, because you would be deeply hurt. I swear to you by the living LORD that I am only a step away from death!"

This is how you will be tested: I swear by the name of the king that you will never leave unless your youngest brother comes here.

Uriah answered, "The men of Israel and Judah are away in battle, and the Covenant Box is with them; my commander Joab and his officers are camping out in the open. How could I go home, eat and drink, and sleep with my wife? By all that's sacred, I swear that I could never do such a thing!"

"Did Joab put you up to this?" he asked her. She answered, "I swear by all that is sacred, Your Majesty, that there is no way to avoid answering your question. It was indeed your officer Joab who told me what to do and what to say.

and on the way Elijah said to Elisha, "Now stay here; the LORD has ordered me to go to Bethel." But Elisha answered, "I swear by my loyalty to the living LORD and to you that I will not leave you." So they went on to Bethel.

Then Elijah said to Elisha, "Now stay here; the LORD has ordered me to go to Jericho." But Elisha answered, "I swear by my loyalty to the living LORD and to you that I will not leave you." So they went on to Jericho.

Then Elijah said to Elisha, "Now stay here; the LORD has ordered me to go to the Jordan River." But Elisha answered, "I swear by my loyalty to the living LORD and to you that I will not leave you." So they went on,

The woman said to Elisha, "I swear by my loyalty to the living LORD and to you that I will not leave you!" So the two of them started back together.