Dictionary entry

καταμαρτυρέω

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

κατα-μαρτυρέω, -ῶ,

[in LXX: Jb 15:6, Pr 25:18 (ענה), al.;]

to bear witness againt: c. acc. rei et gen. pers., Mt 26:6227:13, Mk 14:60.†