'Brother's' in the Bible

Now Herod the tetrarch had been rebuked by John because he had married his brother's wife Herodias and because of all of the other evil things Herod had done.

"Why do you see the speck in your brother's eye but fail to notice the beam in your own eye?

How can you say to your brother, "Brother, let me take the speck out of your eye,' when you don't see the beam in your own eye? You hypocrite! First remove the beam from your own eye, and then you'll see clearly enough to remove the speck from your brother's eye."