Cyril of Alexandria
Catena Aurea · Lukasevangelium 12
I am come to send fire on the earth; and what will I, if it be already kindled? But I have a baptism to be baptized with; and how am I straitened till it be accomplished! Suppose ye that I am come to give peace on earth? I tell you, Nay; but rather division: For from henceforth there shall be five in one house divided, three against two, and two against three. The father shall be divided against the son, and the son against the father; the mother against the daughter, and the daughter against the mother; the mother in law against her daughter in law, and the daughter in law against her mother in law.
Now it is the way of holy Scripture to use sometimes the term fire, of holy and divine words. For as they who know how to purify gold and silver, destroy the dross by fire, so the Saviour by the teaching of the Gospel in the power of the Spirit cleanses the minds of those who believe in Him. This then is that wholesome and useful fire by which the inhabitants of earth, in a manner cold and dead through sin, revive to a life of piety.