Matthew 5:23-24

5:23 So then, if you bring your gift to the altar and there remember that your brother has something against you, 5:24 leave your gift there in front of the altar. First go and be reconciled to your brother and then come and present your gift.

Matthew 5:47

5:47 And if you only greet your brothers, what more do you do? Even the Gentiles do the same, don’t they?

Matthew 23:8

23:8 But you are not to be called ‘Rabbi,’ for you have one Teacher and you are all brothers.