Jesus spoke this parable in Luke 6:39, so . . . what spiritual principal was Jesus teaching?
The only being that has a monopoly on truth is God.
According to Jesus . . . all men are blind to the truth.
And we are only on the correct path . . . when we are lead by God . . . on a daily basis.
This is all according to the Master Plan of God.
The children of Israel gathered manna every day in the wilderness. If they gathered extra manna to hold them over for two days . . . the manna became rotten overnight.
His plan is to have daily contact with us . . . and not a book.
This was the major problem of the nation of Israel . . . they trusted the writings of Moses for spiritual guidelines instead of hearing the voice of God everyday.
So . . . do you learn about God . . . from God? Or do you learn about God . . . from the blind?
Would you ever . . . ask directions from a person that was born blind and has been blind all their life?
If you choose to learn about God from God . . . you will save yourself a lot of time, and be on the correct road.
My goal is to get you to fall in love with God.