G0803–ἀσφάλεια–asphaleia

that you may fully know the truth of the things which you have been taught by word of mouth.

ἀσφάλειαν. asphaleian “certainty.”

saying, "The jail we found quite safely locked, and the warders were on guard at the doors, but upon going in we found no one there."

ἀσφαλείᾳ asphaleia “security”

While they are saying "Peace and safety!" then in a moment destruction falls upon them, like birth-pains on a woman who is with child; and escape there is none.

ἀσφάλεια, asphaleia “security,”