“Do we not all have one Father? Did not one God create us? Why do we profane the covenant of our ancestors by being unfaithful to one another?” (Malachi 2:10)
And now, you priests, this warning is for you. If you do not listen, and if you do not resolve to honor my name, I will send a curse on you and curse your blessings. Because of you I will rebuke your descendants; I will smear on your faces the dung from your festival sacrifices. True instruction was in his mouth and nothing false was found on his lips. He walked with me in peace and uprightness, and turned many from sin. For the lips of a priest ought to preserve knowledge, because he is the messenger of the LORD Almighty and people seek instruction from his mouth. But you have turned from the way and by your teaching have caused many to stumble. Do we not all have one Father? Did not one God create us? Why do we profane the covenant of our ancestors by being unfaithful to one another?
The Catechism identifies the common fatherhood of God as the foundation of the brotherhood that covenant life requires: the same God who created all makes the unfaithfulness of one member to another a profanation of the covenant (CCC 2212).
Brothers and sisters, do we not all have one Father? Did not one God create us? The question is the foundation of every ethic of human solidarity: we share a Father and a Creator. The person you are tempted to treat carelessly or unfaithfully is your sibling under the same Father. Why do we profane the covenant by being unfaithful to one another? Because we have forgotten the one Father. Remember him. Treat his other children accordingly.
Lord God, one Father, one Creator: let your fatherhood of all people produce in us the faithfulness to one another that your covenant requires. Through Christ our Lord. Amen.