So here's a (silly) attempt to address the priest's argument directly: what if you lose a part of your body long before your death? Is that okay? If yes, returning an organ a couple decades later than planned shouldn't be that big a problem, no?
BTW, in my religion, saying "I am not that smart and don't know how to..." is a sin :p
https://www.bbc.co.uk/religion/religions/hinduism/hinduethic...
https://www.organdonation.nhs.uk/helping-you-to-decide/your-...
(This is just from a quick Google search)
So here's a (silly) attempt to address the priest's argument directly: what if you lose a part of your body long before your death? Is that okay? If yes, returning an organ a couple decades later than planned shouldn't be that big a problem, no?
BTW, in my religion, saying "I am not that smart and don't know how to..." is a sin :p