'Darkness' in the Bible

To give light to them that sit in darkness and in the shadow of death, to guide our feet into the way of peace.

The light of the body is the eye: therefore when thine eye is single, thy whole body also is full of light; but when thine eye is evil, thy body also is full of darkness.

Take heed therefore that the light which is in thee be not darkness.

Therefore whatsoever ye have spoken in darkness shall be heard in the light; and that which ye have spoken in the ear in closets shall be proclaimed upon the housetops.

When I was daily with you in the temple, ye stretched forth no hands against me: but this is your hour, and the power of darkness.

And it was about the sixth hour, and there was a darkness over all the earth until the ninth hour.