1. On a new document, go to the Insert tab:
2. Then select the down facing triangle under the Object option, as shown below. From the new drop-down menu, select Text from file…
3. You can select multiple files by holding CTRL and clicking on each file you want to import. If it's a long list, you can hold any SHIFT key and then click on the first and last files you want imported, any files in between will be selected as well.
4. Once you have clicked on Insert, the text from all these Word documents will be imported inside your blank document.