'Evidence' in the Bible

I, John, your brother and companion in the tribulation and kingdom and patient endurance which are in Jesus, was on the island called Patmos, [exiled there] because of [my preaching of] the word of God [regarding eternal salvation] and the testimony of Jesus Christ.

When they have finished their testimony and given their evidence, the beast that comes up out of the abyss (bottomless pit) will wage war with them, and overcome them and kill them.