G0803–ἀσφάλεια–asphaleia

that you might know the certainty concerning the things in which you were instructed.

ἀσφάλειαν. asphaleian “certainty.”

"We found the prison shut and locked, and the guards standing before the doors, but when we opened them, we found no one inside!"

ἀσφαλείᾳ asphaleia “security”

For when they are saying, "Peace and safety," then sudden destruction will come on them, like birth pains on a pregnant woman; and they will in no way escape.

ἀσφάλεια, asphaleia “security,”