Passage
and *they* have overcome him by reason of the blood of the Lamb, and by reason of the word of their testimony, and have not loved their life even unto death.
and *they* have overcome him by reason of the blood of the Lamb, and by reason of the word of their testimony, and have not loved their life even unto death.
Revelation 12:9 And the great dragon was cast out, the ancient serpent, he who is called Devil and Satan, he who deceives the whole habitable world, he was cast out into the earth, and his angels were cast out with him.
Revelation 12:10 And I heard a great voice in the heaven saying, Now is come the salvation and the power and the kingdom of our God, and the authority of his Christ; for the accuser of our brethren has been cast out, who accused them before our God day and night:
Revelation 12:11 and *they* have overcome him by reason of the blood of the Lamb, and by reason of the word of their testimony, and have not loved their life even unto death.
Revelation 12:12 Therefore be full of delight, ye heavens, and ye that dwell in them. Woe to the earth and to the sea, because the devil has come down to you, having great rage, knowing he has a short time.
Revelation 12:13 And when the dragon saw that he had been cast out into the earth, he persecuted the woman which bore the male [child].
The verse centers on "overcome", "reason", "blood", "lamb", "word", "testimony", and "loved". It is saying that the verse draws attention to "overcome" and "reason", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 10's "And I heard a great voice in..." into verse 12's "Therefore be full of delight ye heavens...", so "overcome" and "reason" belong inside that flow. In Revelation context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "overcome" and "reason" with trust shaped by these words, not by a vague optimism outside the passage.