Matthew 12:25

Every kingdom. Strong as a kingdom may appear, it is easily overturned by divisions; and lest it should be objected, that ruin was brought upon it by a multiplicity of clashing affairs, it is added that cities and families share the same fate, if subject to similar divisions. (St. John Chrysostom, hom. xlii). --- The Pharisees, on a former occasion, had laid a similar accusation against him. Then indeed he did not correct them, wishing them to discover his virtue from the miracles he performed, and the dignity of his character from the doctrines he delivered; but as they still continue the old accusation, he now wishes to convince them of their error. Envy does not so much seek how to speak, as what to speak. Yet Christ does not despise them, but answers them in the most meek and humble manner, teaching us to be charitable to our enemies, though they behave to us in the most inimical manner. By this also, our divine Saviour evidently demonstrates the falsity of the accusation; for it is never in the power of a possessed person to know another's thoughts, nor give so mild an answer. And as his enemies did not dare, from fear of the people, openly to broach this base calumny, seeing their thoughts, he answered them; still he does not expose to public infamy the malice of their hearts, but gives them a private solution of their difficulty. (St. John Chrysostom in St. Thomas Aquinas)