'Assuredly' in the Bible

Whoever will not receive you nor hear you, as you depart from there, shake off the dust that is under your feet for a testimony against them. Assuredly, I tell you, it will be more tolerable for Sodom and Gomorrah in the day of judgment than for that city!"

For those will be times of suffering the like of which has never been from the first creation of God's world until now, and assuredly never will be again;