Translation:

68. Do ye then feel secure that He will not cause you to be swallowed up beneath the earth when ye are on land or that He will not send against you a violent tornado (with showers of stones) so that ye shall find no one to carry out your affairs for you?

Notes (Tafseer)

2263. Man is safe neither on land nor at sea except by the grace and mercy of Allah. How forcibly this is brought home to us by the Quetta earthquake of 31st May 1935, when tens of thousands of men, women, and children, perished in a few moments, by night, buried in debris! The stories of violent destructive tornadoes in such areas as the southern United States are equally impressive. The destruction is so sudden that the victims have no time to arrange anything. They are simply wiped out.