Theophylact of Bulgaria
After this, leaving aside the comparison of the impious, he proceeds to denounce them by their very deeds, calling them murmurers and faultfinders. A murmurer is one who reproaches what displeases him through his teeth and timidly. A faultfinder is one who always laughs at everything. These vile men are murmurers and faultfinders. They are murmurers because they do not dare to use their teaching openly, because of its foulness. It is unsafe to publish abroad their impiety, joined with corruption and blasphemy. They are faultfinders because they slander everything that is not their own, and even the truth itself, so as to establish more firmly their own evil and corruption. What was said above, that heretics, like Balaam, were carried away by reward, he now explains with the words: they show partiality for gain. To show partiality means to deal flatteringly with those in authority.