en_tn_condensed/rev/12/10.md

I

The word "I" refers to John.

I heard a loud voice in heaven

"I heard someone saying loudly from heaven"

Now have come the salvation and the power and the kingdom of our God, and the authority of his Christ

"Now God has saved his people by his power, God rules as king, and his Christ has all authority"

the accuser of our brothers has been thrown down

This is the dragon that was thrown down in Revelation 12:9.

our brothers

"our fellow believers"

day and night

These two parts of the day are used together to mean "all the time" or "without stopping"