Let them alone: the blind are leaders of the blind: if the blind may lead the blind, both will fall into the ditch.

Then a demonized man was brought to Him, blind and dumb: and He healed him, so that the blind and dumb man both spake and saw.

And He spoke a parable unto them, Whether is the blind able to lead the blind? will they not both fall into the ditch?

and persuade yourself that you are a guide of the blind, a light of those who are in darkness, an instructor of the ignorant,

And now, behold, the hand of the Lord is upon thee, and thou shalt be blind, not seeing the sun for a time. And immediately there fell on him a mist and darkness; and going about he was seeking people to lead him by the hand.

in whom the god of this age has blinded the minds of those who believe not, in order that the light of the gospel of the glory of Christ, who is the image of God, may not shine on them.