Revelation 1:9

1:9 I, John, your brother and the one who shares with you in the persecution, kingdom, and endurance that are in Jesus, was on the island called Patmos because of the word of God and the testimony about Jesus.

Revelation 11:3

11:3 And I will grant my two witnesses authority to prophesy for 1,260 days, dressed in sackcloth.

Revelation 11:7

11:7 When they have completed their testimony, the beast that comes up from the abyss will make war on them and conquer them and kill them.

Revelation 12:11

12:11 But they overcame him

by the blood of the Lamb

and by the word of their testimony,

and they did not love their lives so much that they were afraid to die.