4 Bible Verses about Blindness, Symbolic

But if thy right eye cause thee to offend, pluck it out and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.

But if thine eye be evil, thy whole body shall be full of darkness: if therefore the light that is in thee be darkness, how great is that darkness?

And if thine eye offend thee, pluck it out, and cast it from thee: it is good for thee to enter into life with one eye, rather than having two eyes to be cast into hell-fire.

And he spoke a parable to them, Can the blind lead the blind? Will they not both fall into a ditch?