Extended Strong's Greek Lexicon (Abbott-Smith based)
eyewitness
Usage: ἐπόπτης, -ου, ὁ [in LXX (of God): Est.5:1, 2Ma.3:39 2Mac 7:35, 3Ma.2:21 * ;] __1. an overseer (LXX, ll. with). __2. a spectator: 2Pe.1:16 (of ἐ. as applied to God, see parallels in Inscr., MM, Exp., xiv; of the use of this term in the mysteries, see Mayor on 2Pe, l.with; Thayer, see word).† (AS)