'Walks in Darkness' in the Bible

nor for the plague that walks in darkness, of the destruction laying waste at noonday.

The wise man's eyes are in his head; but the fool walks in darkness; and I also knew that one event happens to all of them.

Who among you fears Jehovah, who obeys the voice of His servant, who walks in darkness and has no light? Let him trust in the name of Jehovah and rest on his God.