καταμαρτυρέωkatamartyréō

Same root

• κατάkatá · G2596(prepositionally) down (in place or time), in varied relations (according to the case (genitive, dative or accusative) with which it is joined)
• μαρτυρέωmartyréō · G3140to be a witness, i.e. testify (literally or figuratively)

Where it appears

Appears 3 times in the Bible.

• Matthew 26:62 Then the high priest stood up and said to Jesus, “Well, aren’t you going to answer these charges? What do you have to say for yourself?”
• Matthew 27:13 “Don’t you hear all these charges they are bringing against you?” Pilate demanded.
• Mark 14:60 Then the high priest stood up before the others and asked Jesus, “Well, aren’t you going to answer these charges? What do you have to say for yourself?”