A religion one here -aibu to find my work colleagues comments offensive

She's the sort that gives Christianity a bad name OP. I wouldn't even try to reason with her as you can't debate with closed minds. It's not Christianity at fault here and I can't recall any religious leaders calling for forgiveness in this case. And why would they?

@pistaacioaquestion - you are entitled to your opinion, as is the OP, her colleague, and me.
Did I say in my post that I would make the "figment of imagination comment" to the religious colleague? - I wouldn't, but it doesn't stop that being my belief, which I am free to express here.
I simply wouldn't get involved in a conversation to that depth about religion in a work (or any) environment, and would have done the "agree to disagree" conversation stopper at an earlier stage in the conversation, but i wouldn't let it bother me to the extent that the OP has.

I think it's unreasonable for you to be offended. You have different opinions and that's okay.

This 100%
I would never forgive the perpetrator and in fact I hope he rots in jail. Hell too if it exists.
If Heaven exists and God forgives him but not the husband and father of the victims then I’m glad I’m not religious

And here we have the offensive comments wading in as always. Interesting that as an atheist it’s respectful to say just your first line without the rest needing to be said. We don’t have to believe, we don’t have to agree, but we can do that respectfully without throwing around the “figment of imagination” remarks. That just makes you sound incredibly judgemental rather than clever which is presumably what you were hoping for.

Some people do forgive. I can't remember her name but there's a woman who has forgiven her daughter's rapist and killer and has made him her 'son'.

You can choose to find her views her offensive, I certainly do but she is entitled to have her views.

The first part I can understand as that's typically Christian but I'd want to know what she meant about not knowing the whole story.

Fine for her to say that, as she is a Christian, she personally would have to forgive, because her religion says so.

Not fine for her to suggest that anyone else has to forgive, or to imply that someone who was raped and murdered with a crossbow by a violent misogynist might have somehow done something to deserve it.

she is entitled to her beliefs - but why give a toss about what she thinks a figment of her imagination might "think" about someone you've never met?

Some people hold very strong views and beliefs which you may not agree with. It's best to avoid this type of discussion with these people, stick to neutral work topics.

No, I wouldn't be offended that someone believes something I don't.

You can disagree with her but find it offensive? No .

She needs to wind her neck in, the Bible clearly tells her to judge not least she be judged. Horrible to even comment on this stuff like that.