"CANON XV.-If any one saith, that a man, who is born again and justified, is bound of faith to believe that he is assuredly in the number of the predestinate; let him be anathema
CANON XVI.-If any one saith, that he will for certain, of an absolute and infallible certainty, have that great gift of perseverance unto the end,-unless he have learned this by special revelation; let him be anathema."
Say sayonara to Perseverance of the Saints. At least, if you like the Council of Trent.
Also, a fun fact we can derive from this council's decrees, especially from the reference to the predestinate as an actual and definite thing: It exists. And even one of the Christian churches which insists most fervently on man's free will--that is, the Roman Catholic Church--insists on some notion of predestination being preserved. Of course I would argue that this notion is pretty undeniably Biblical, just, well, not the notion as the Calvinists would have it be.
Lest anyone doubt that Trent also affirmed human freedom:
"CANON IV.-If any one saith, that man's free will moved and excited by God, by assenting to God exciting and calling, nowise co-operates towards disposing and preparing itself for obtaining the grace of Justification; that it cannot refuse its consent, if it would, but that, as something inanimate, it does nothing whatever and is merely passive; let him be anathema.
CANON V.-If any one saith, that, since Adam's sin, the free will of man is lost and extinguished; or, that it is a thing with only a name, yea a name without a reality, a figment, in fine, introduced into the Church by Satan; let him be anathema."
Clear anathemization by the council of Irresistible Grace and also of the denial of free will as a result of Original Sin. Human freedom: Affirmed!