Religious leaders become blind guides when tradition displaces God's command.

Matthew 15:12–14

¹²Then came his disciples, and said unto him, Knowest thou that the Pharisees were offended, after they heard this saying?

¹³But he answered and said, Every plant, which my heavenly Father hath not planted, shall be rooted up.

¹⁴Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch.