Why.

Matthew 7:3-5
Why do you look at the speck in your brother's eye, but fail to notice the beam in your own eye? . . .

Mark 7:6-8, 13
Jesus answered them, "Isaiah prophesied correctly about you hypocrites, as it is written: 'These people honor Me with their lips, but their hearts are far from Me. . . .

Colossians 2:8, 23
See to it that no one takes you captive through philosophy and empty deception, which are based on human tradition and the spiritual forces of the world rather than on Christ. . . .

Titus 1:14
and will pay no attention to Jewish myths or to the commands of men who have rejected the truth.