'Wood' in the Bible

And why do you take note of the grain of dust in your brother's eye, but take no note of the bit of wood which is in your eye?

How will you say to your brother, Brother, let me take the grain of dust out of your eye, when you yourself do not see the bit of wood in your eye? O false one! first take the wood out of your eye and then you will see clearly to take the dust out of your brother's eye.