So if you are offering your gift at the altar, and there remember that your brother has something against you, leave your gift there before the altar and go; first be reconciled to your brother, and then come and offer your gift.

Matthew 5:23-24

It is becoming of Your Grace to know that a preacher must be prepared in his soul to speak the truth, both in denouncing and correcting shortcomings and in praising virtue, to such a point that he is willing in that cause even to face death.” 

 - St. John of Sahagun