You see the sliver in your friend's eye... (Thomas 26)
You hypocrite! First remove the beam from your own eye... (Luke 6:41-42)
What goes into your mouth will not defile you... (Thomas 14:5)
But the things which proceed out... (Mark 7:14-15)
As for you, be as sly as snakes... (Thomas 39:3)
And harmless as doves. (Matthew 10:16)
These are sayings that likely go back to Jesus.