2) Indulgences-Salvation by works: Ecclesiasticus 3:30, Water will quench a flaming fire, and alms maketh atonement for sin. Tobit 12:8-9, 17, It is better to give alms than to lay up gold; for alms doth deliver from death, and shall purge away all sin.
3) Exorcism: Tobit 6:5-8, If the Devil, or an evil spirit troubles anyone, they can be driven away by making a smoke of the heart, liver, and gall of a fish...and the Devil will smell it, and flee away, and never come again anymore.
4) Immaculate Conception: Wisdom 8:19-20, And I was a witty child and had received a good soul. And whereas I was more good, I came to a body undefiled.
These are not corrupt. Although indulgences and money were connected at one time — the money is not accepted today.
You also forgot the Book of James — faith AND works
The purgatory reference you quote is only one. There are many more — what will you say, when at the moment of your death you discover you are in Purgatory?
The Immaculate Conception was validated through the witness of a young girl, St. Bernadette, to her Bishop. Please read about her.
Speaking in generalities like that can cause trouble, no?
PS. We are not snookered! LOL!