Keep track of line numbers in response to reviewers

I am working on resubmitting a paper to a journal and am working on my response to reviewers. I need to refer to a bunch of line numbers in my response to reviewers and it is frustrating because every time I make a change to my manuscript the line numbers change a bit.

For instance, say a revewer writes: "you should use the word 'correlate' rather than 'co-occur' in line 243" I would then reply. "'co-occur' was replaced with 'correlate' in line 245". Note the line number is now higher because I added a sentence to my paper. This is fine, but say I have a whole bunch of these lines, and then I decide to add one more sentence to the beginning of my paper. Right now, I would have to go through my response and update all of the line numbers. I feel like there must be a better way to keep track of these. Maybe with some sort of dynamic field or something in word or open office. Does anyone have a suggestion?