Luke 20:36

The children of resurrection; i.e. of the just, who shall rise to a happy resurrection: not but that the wicked shall also rise, but to their condemnation and greater misery. (Witham) --- Jesus Christ begins with stating the wide difference between the state of things in this mortal life and in that which is to come: that marriage necessary here, will be unnecessary hereafter. For, in this life, they are children of men, subject to death, and therefore under the necessity of continuing their race by generation; but in the next life, they shall be children of resurrection, living for eternity, never to die, and consequently sons of God, and immortal. Resurrection is a kind of regeneration to immortality. Hence St. Paul explains to our Saviour's rising again, these words of the 2nd Psalm: Thou art my Son, this day have I begotten thee. (Calmet)