[ἀδιαφθορία] from a derivative of a compound of G1 (as a negative particle) and a derivative of G1311; incorruptibleness, i.e. (figuratively) purity (of doctrine)
Usages throughout the bible
Titus 2:7
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In all things shewing thyself a pattern of good works: in doctrine shewing uncorruptness, G90 gravity, sincerity,