Gregory the Great, on Job 33:3

“My words are from my upright heart, and my lips shall speak a pure sentence.”

“My words are from my simple heart, and my lips shall speak a pure sentence. To say that speech is simple, is a praise of great weight. But because the haughty possess it not, they assert the more anxiously that they possess it, in order that they may be heard with less apprehension. And they declare that they are going to speak with pure intention, because they are afraid of their wicked duplicity being discovered. But they often also blend together truth and falsehood, that their falsehood may be the more speedily believed, from its being discerned that they speak the truth. Because then Eliu both said that he would speak with pure intention, and by calling his words 'sentences' ushered them in with applause, he subjoins the same 'sentence' which he promised.”

Imported from an open dataset — not yet checked against the printed edition.