27 Here καί (kai) has been translated as “then” to indicate the implied sequence of events within the vision.
28 Or “the right of his Messiah to rule.” See L&N 37.35.
29 Or “Messiah”; both “Christ” (Greek) and “Messiah” (Hebrew and Aramaic) mean “one who has been anointed.”
30 Grk “brothers,” but the Greek word may be used for “brothers and sisters” or “fellow Christians” (cf. ἀδελφός 1, where considerable nonbiblical evidence for the plural ἀδελφοί [adelphoi] meaning “brothers and sisters” is cited). The translation “fellow believer” would normally apply (L&N 11.23), but since the speaker(s) are not specified in this context, it is not clear if such a translation would be appropriate here. The more generic “brothers and sisters” was chosen to emphasize the fact of a relationship without specifying its type.
31 Or “who accuses them continually.”
32 Here καί (kai) has been translated as “but” to indicate the contrast.
33 They did not love their lives. See Matt 16:25; Luke 17:33; John 12:25.

In other versions

ESVEnglish Standard Version

And I heard a loud voice in heaven, saying, “Now the salvation and the power and the kingdom of our God and the authority of his Christ have come, for the accuser of our brothers has been thrown down, who accuses them day and night before our God. And they have conquered him by the blood of the Lamb and by the word of their testimony, for they loved not their lives even unto death.

NIVNew International Version (2011)

Then I heard a loud voice in heaven say:

“Now have come the salvation and the power

and the kingdom of our God,

and the authority of his Messiah.

For the accuser of our brothers and sisters,

who accuses them before our God day and night,

has been hurled down.

They triumphed over him

by the blood of the Lamb

and by the word of their testimony;

they did not love their lives so much

as to shrink from death.

CSBChristian Standard Bible

Then I heard a loud voice in heaven say,

The salvation and the power

and the kingdom of our God

and the authority of his Christ

have now come,

because the accuser of our brothers and sisters,

who accuses them

before our God day and night,

has been thrown down.

They conquered him

by the blood of the Lamb

and by the word of their testimony;

for they did not love their lives

to the point of death.

NLTNew Living Translation

Then I heard a loud voice shouting across the heavens,

“It has come at last—

salvation and power

and the Kingdom of our God,

and the authority of his Christ.

For the accuser of our brothers and sisters

has been thrown down to earth—

the one who accuses them

before our God day and night.

And they have defeated him by the blood of the Lamb

and by their testimony.

And they did not love their lives so much

that they were afraid to die.

LEBThe Lexham English Bible

And I heard a loud voice in heaven saying,

“Now the salvation and the power

and the kingdom of our God

and the authority of his Christ have come,

because the accuser of our brothers has been thrown down,

the one who accuses them before our God day and night.

And they conquered him by the blood of the Lamb

and by the word of their testimony,

and they did not love their lives until death.

KJV 1900King James Version

And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night. And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.

Public Domain