I was creating Instagram posts, and I noticed that there might have been something wrong with the text. Here it is:
‘Heaven’ is an uncountable noun that refers to a place where good people go after they die. On the other hand, ‘haven’ is a countable noun that refers to a safe and peaceful place, which is not as abstract as ‘heaven’ is.
According to R.Murphy (See English Grammar In Use 5th edition, page 190.), it's not correct to use 'that' if a relative clause gives extra meaning. Such as in the sentence
Anne told me about her new job, which she's enjoying a lot.
Do you think I should change "that" with "which" in these sentences? I'm not sure about the function of the relative clauses in my text, whether they give extra meaning or not.