Saint Gregory of Nazianzus said that besides water baptism and baptism by blood, there is a "baptism of tears" (Penance):
Yes, and I know of a Fifth [Baptism] also, which is that of tears, and is much more laborious, received by him who washes his bed every night and his couch with tears; whose bruises stink through his wickedness; and who goes mourning and of a sad countenance; who imitates the repentance of Manasseh (2 Chronicles 38:12) and the humiliation of the Ninevites (Jonah 3:7-10) upon which God had mercy; who utters the words of the Publican in the Temple, and is justified rather than the stiff-necked Pharisee; (Luke 18:13) who like the Canaanite woman bends down and asks for mercy and crumbs, the food of a dog that is very hungry.Saint Ignatius of Loyola similarly had the "gift of tears":
St. Gregory Nazianzus, Oration 39, XVII.
He sometimes cried so much at Mass that he could not go on, nor even talk for some time, and he was afraid that his gift of tears might cause him to lose his eyesight. Goncalves de Camara said, "When he did not weep three times during Mass, he considered himself deprived of consolation." We regard a number of saints as great mystics but never think of Ignatius as one of them. We have recounted a few of the many visions and mystical experiences in his life. His holiness, however, did not consist in such, but in the great love that directed his life to do everything A.M.D.G., for the greater glory of God.Hat tip to Matthew Mehan.