Yes, please be clear about what you want to do.
If the repeating text is entered into a formfield (say, named "Client"), then if that formfield property "Calculate on exit" is checked:
1. go to where ever you want it repeated
2. press Ctrl-F9
3. type "Client" (no quotes)
4. move the cursor to another location
Done. Protected for forms, once text is entered into the "Client" formfield, its text will be repeated in all other fields that point to it (via the steps above).
This is essentially the same as using a REF field. You can do this as many times as you want. So that one formfield ("Client") text can be repeated 40 times if you like.
Other than that, please try and be explicit in what you want to do. Do you actually need a source file like Excel? Do you want to include text from another Word document? In which case, look at using INCLUDETEXT. Or, as it has been suggested, use MailMerge.
Gerry