In Second Thessalonians Chapter 2, St. Paul, who gained divine knowledge of the future as a result of his rapture to the 3rd Heaven (2 Corinthians 12:2), gives a most clear and severe warning for those living in the end times, that is, for us.
In a manner most befitting his role as the great Doctor of the Gentiles, he succinctly sums up what will happen by stating that the "operation of error" (2 Thessalonians 2:10) will be given to certain individuals as punishment. This operation of error is Modernism, condemned by Pope St. Pius X as the "synthesis of all heresies". (Encyclical Pascendi)
What I wish to focus on here is that St. Paul states clearly the all-important reason why the operation of error will be rampant, and who will be infected and destroyed by it.
"That all may be judged who have not believed the truth, but have consented to iniquity" (2 Thessalonians 2:11)
The key word here is "consented". It is elementary Catholic teaching that one may become guilty of a sin by consenting to iniquity as well as by actual committing it.
Let us apply this doctrine to those who believe themselves to be true Catholics and yet attend the so-called "Indult Mass".
What is the condition given for permission to attend an "Indult Mass"? One must consent to Vatican II and the "New Mass" and recognize the claims to Catholic authority of those responsible for it.
The problem is that Vatican II, which contained absolute heresy in its documents, and the "New Mass", which is sacrilegious and invalid, are iniquitous. And so are the Modernist monsters who have foisted their new religion upon the Catholic world. And so are the rotten fruits all but the grossly blind see all around.
That so many who call themselves Catholic fail, or even refuse, to see that the rotten fruits of Vatican II must have come from a rotten tree, and rather consent to them, is simply proof that the punishment is already upon them, that they are already involved in the "operation of error to believe lying"! (2 Thessalonians 2:10)
Such as these will no doubt follow Antichrist when he comes. That is the clear teaching of St. Paul.
If you, the reader, are one of those who thinks salvation can be had while consenting in any way to the iniquitous new religion which blasphemously claims the name of "Catholic", then you are sadly lacking in grace.
The remedy? For starters, you need to start praying the daily Rosary as Our Lady of Fatima asked, and beg that your eyes be opened before the blind leaders you are following lead you into the pit (cf. Matthew 15:14).
I will never consent to the iniquitous new religion. By God's grace, I will always adhere to the one true Catholic religion founded by Jesus Christ our Lord, outside of which no one at all can be saved.
After all, I want to go to Heaven.