keeping watch on the evil and the good.
Proverbs 15:3 (ESV)
Take no part in the unfruitful works of darkness,
but instead expose them.
Ephesians 5:11 (ESV) The fifth angel sounded his trumpet,
and I saw a star that had fallen
from the sky to the earth.
The star was given the key
to the shaft of the Abyss.
Apocalypse 9:1 (NIV)