'Thick' in the Bible

O generation, see ye the word of Jehovah: A wilderness have I been to Israel? A land of thick darkness? Wherefore have My people said, 'We mourned, We come not in again unto Thee.'

Give ye to Jehovah your God honour, Before He doth cause darkness, And before your feet stumble on dark mountains, And ye have waited for light, And He hath made it for death-shade, And hath appointed it for thick darkness.

Therefore is their way to them as slippery places, Into thick darkness they are driven, And they have fallen in it, For I bring in against them evil, The year of their inspection, An affirmation of Jehovah.