The table of contents feature would work with this. You would have to customize the field a bit.

The information you want repeated would have to be in a Style that is picked up by the Table of Contents.

Start by reading the following articles. Note that although it would be easy enough to use a heading 5 or 6 style for your text, you could use a different style if you want. These styles start out with a particular formatting, but you have them formatted to look just like the rest of your text if you want.

Why use Microsoft Word’s built-in heading styles?
How to create a table of contents in Microsoft Word

If you are doing automatic numbering, you should also read:
How to create numbered headings or outline numbering in Word 2007 and Word 2010

Your time would also be well-spent reading the articles on Word basics that start at:
Basic concepts of Microsoft Word: An introduction