Matthew 13:41

Or we may understand it of the kingdom of the heavenly Church; and then there will be held out here a two-fold punishment; first that they fall from glory as that is said, And they shall gather out of his kingdom all offences, to the end, that no offences should be seen in His kingdom; and then that they are burned. And they shall cast them into a furnace of fire. Behold the unspeakable love of God towards men! He is ready to show mercy, slow to punish; when He sows, He sows Himself; when He punishes, He punishes by others, sending His Angels to that. It follows, There shall be weeping and gnashing of teeth.

The offences are to be referred to the tares.

(De Civ. Dei. xx. 9.) Out of that kingdom in which are no offences? The kingdom then is His kingdom which is here, namely, the Church.

Observe, He says, Those that do iniquity, not, those who have done; because not they who have turned to penitence, but they only that abide in their sins are to be delivered to eternal torments.

(non occ.) The offences, and, them that do iniquity, are to be distinguished as heretics and schismatics; the offences referring to heretics; while by them that do iniquity are to be understood schismatics. Otherwise; By offences may be understood those that give their neighbour an occasion of falling, by those that do iniquity all other sinners.