Where was it taught and declared?
- It was once taught and declared by a pope to be heretical, immoral, and sinful to pray with people of other faiths. We can now pray with people of others faiths.
This has not changed. The definition for mortal sin remains unchanged and suicide is grave matter. The scientific discoveries of mental illness and depression can mitigate the third requirement for mortal sin: full consent of the will. The Church understands that. That hardly constitutes a change in teaching. But one who commits suicide fully knowing and consenting is still hellbound.
- It was once taught that anyone who committed suicide would definitely go to hell. Now with modern understanding of modern psychology, that is no longer the case.
Where was it taught and declared? A little Latin name would definitely help.
- It was once heretical and punishable to believe that the earth was round. That is no longer the case today. Although this is technically a matter of science, the Church at that time taught that it was a matter of Faith.
Again, the behaviour or mere opinions of churchmen does not constitute Magisterial teaching. Show me something from a Council, a Bull or something of a Magisterial nature.
IF, IF you can show that the Church reversed itself on a moral teaching (and not thin-air allegations such as these), then I will simply accept that the Church has no authority to teach anything, and that it’s pointless to be Catholic.
So go ahead. Make your case.