Canon 351 § 1 of the 1983 Code of Canon Law:
“The Roman Pontiff freely selects men to be promoted as cardinals, who have been ordained at least into the order of the presbyterate [i.e., priest] and are especially outstanding in doctrine, morals, piety, and prudence in action; those who are not yet bishops must receive episcopal consecration [i.e., consecrated as a bishop].”
Pope Francis presided over Mass today with the new Cardinals - a portion of his homily here:
In the Gospel Jesus also speaks to us of holiness, and explains to us the new law, his law. He does this by contrasting the imperfect justice of the scribes and Pharisees with the higher justice of the Kingdom of God. The first contrast of today’s passage refers to revenge. “You have heard that it was said, ‘An eye for an eye and a tooth for a tooth. But I say to you … if anyone should strike you on the right cheek, turn to him the other also” (Mt 5:38-39). We are required not only to avoid repaying others the evil they have done to us, but also to seek generously to do good to them.
The second contrast refers to our enemies: “You have heard that it was said, ‘You shall love your neighbour and hate your enemy’. But I say to you, love your enemies and pray for those who persecute you” (Mt 5:43-44). Jesus asks those who would follow him to love those who do not deserve it, without expecting anything in return, and in this way to fill the emptiness present in human hearts, relationships, families, communities, and entire world. Jesus did not come to teach us good manners, how to behave well at the table! To do that, he would not have had to come down from heaven and die on the Cross. Christ came to save us, to show us the way, the only way out of the quicksand of sin, and this way is mercy. To be a saint is not a luxury. It is necessary for the salvation of the world.
Dear brother Cardinals, the Lord Jesus and mother Church ask us to witness with greater zeal and ardour to these ways of being holy. It is exactly in this greater self-gift, freely offered, that the holiness of a Cardinal consists. We love, therefore, those who are hostile to us; we bless those who speak ill of us; we greet with a smile those who may not deserve it. We do not aim to assert ourselves; we oppose arrogance with meekness; we forget the humiliations that we have endured. May we always allow ourselves to be guided by the Spirit of Christ, who sacrificed himself on the Cross so that we could be “channels” through which his charity might flow. This is the attitude of a Cardinal, this is how he acts. A Cardinal enters the Church of Rome, not a royal court. May all of us avoid, and help others to avoid, habits and ways of acting typical of a court: intrigue, gossip, cliques, favouritism and preferences. May our language be that of the Gospel: “yes when we mean yes; no when we mean no”; may our attitudes be those of the Beatitudes, and our way be that of holiness. - Source
Oddly enough, the Holy Father said nothing about Conceal and Carry - keeping a gun for self-defense.