II Thessalonians 2:  And then that wicked one shall be revealed whom the Lord Jesus shall kill with the spirit of his mouth; and shall destroy with the brightness of his coming, him,  Whose coming is according to the working of Satan, in all power, and signs, and lying wonders,  And in all seduction of iniquity to them that perish; because they receive not the love of the truth, that they might be saved. Therefore God shall send them the operation of error, to believe lying:  That all may be judged who have not believed the truth, but have consented to iniquity.”
The Douay-Rheims notes: “ “God shall send”: That is God shall suffer them to be deceived by lying wonders, and false miracles, in punishment of their not entertaining the love of truth.”
What has happened is that the Operation of Error has entered into our common thinking and speech. If we truly love truth, we must be precise in our speech.
More to come.
Let us go to Isaias: “ And the Lord said: Forasmuch as this people draw near me with their mouth, and with their lips glorify me, but their heart is far from me, and they have feared me with the commandment and doctrines of men:  Therefore behold I will proceed to cause an admiration in this people, by a great and wonderful miracle: for wisdom shall perish from their wise men, and the understanding of their prudent men shall be hid.  Woe to you that are deep of heart, to hide your counsel from the Lord: and their works are in the dark, and they say: Who seeth us, and who knoweth us?” (Isaias 29) Notice that when we as a majority only give lip service to God, God will allow: “wisdom shall perish from their wise men, and the understanding of their prudent men shall be hid.”