ἀσφάλεια

That thou mightest know the certainty of those things, wherein thou hast been instructed.

Saying, The prison truly found we shut with all safety, and the keepers standing without before the doors: but when we had opened, we found no man within.

For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape.