This noun denotes the act of confirming or establishing something firmly, used in classical Greek for confirming decisions or providing legal warranty. In the New Testament's two occurrences, it describes the confirming or establishing of spiritual realities. Paul speaks of believers' partnership in the gospel 'both in my imprisonment and in the confirmation of the gospel' (Phil 1:7), while Hebrews notes that an oath provides 'confirmation' to end disputes (Heb 6:16). The word suggests making something secure, legally binding, or beyond question—removing uncertainty and establishing truth firmly.