'Darkness' in the Bible

The people who were dwelling in darkness have seen a brilliant light; and on those who were dwelling in the region of the shadow of death, on them light has dawned."

but if your eyesight is bad, your whole body will be dark. If however the very light within you is darkness, how dense must the darkness be!

while the natural heirs of the Kingdom will be driven out into the darkness outside: there will be the weeping aloud and the gnashing of teeth."

"The man stood speechless. Then the king said to the servants, "'Bind him hand and foot and fling him into the darkness outside: there will be the weeping aloud and the gnashing of teeth.'

But as for this worthless servant, put him out into the darkness outside: *there* will be the weeping and the gnashing of teeth.'

Now from noon until three o'clock in the afternoon there was darkness over the whole land;