Asphaleia denotes stated security, a prison’s secure condition, or certainty about instructed words.

The attested uses show security or certainty: a claimed condition joined with peace, the secured state of a prison, and certainty concerning words of instruction.

1. Security or certainty in stated conditions · dominant

   In 1 Thessalonians 5:3, the nominative singular form occurs in the declaration that precedes sudden destruction; the APB renders the statement "Peace and security." In Acts 5:23, the dative singular form describes how the prison was found shut; the APB renders it "in all security." In Luke 1:4, the accusative singular form concerns knowing the certainty about instructed words; the APB renders "the certainty concerning the words about which you were instructed."

   1 Thessalonians 5:3Acts 5:23Luke 1:4

In the Anselm Project Bible: The APB uses "security" in 1 Thessalonians 5:3 and Acts 5:23, and "certainty" in Luke 1:4. These renderings indicate the clauses' presentation rather than a fixed English equivalent.