How were they killed, these that were slain for the word of God and the testimony they held?
It matters little how, but it matters greatly why.
Where are they and what are they doing?
They are In a better place, waiting under the altar in heaven, a place that speaks of sacrifice.
(9) And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:
(10) And they cried with a loud voice, saying, How long, O Lord, holy and true, do you not judge and avenge our blood on them that dwell on the earth?
(11) And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they were, should be fulfilled.
Their bodies were killed but their souls did not cease to exist. They are conscious of what has happened, and are capable of voicing their desire to know when the divine consequences for their martyrdom will occur.
A season must pass, and more must be slain for the same reason they were, so they should rest.
There are martyrs dressed in white robes, resting in heaven while we testify the truth of the word of God on earth.
Some of us are being persecuted and slain for this, but we trust God that His judgment will come and this blood will be avenged.
Thankyou Lord Jesus for the sacrifice of those waiting souls who are resting under the altar in heaven.