'Surely' in the Bible

surely you would not want to wait until they were old enough to marry! Surely you would not remain unmarried all that time! No, my daughters, you must not return with me. For my intense suffering is too much for you to bear. For the Lord is afflicting me!"

Remain here tonight. Then in the morning, if he agrees to marry you, fine, let him do so. But if he does not want to do so, I promise, as surely as the Lord lives, to marry you. Sleep here until morning."