Abbott-Smith Manual Greek Lexicon
προ-μαρτύρομαι (G4303)
1 *† προ-μαρτύρομαι , to protest beforehand (cf. μαρτύρομαι , and V. Hort, in l.): I Pe 1:11 (elsewhere only in Theod. Met., xiv/AD.).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain