Content from another page in a sidebar

I would like to be able to call up the content of another page in the secondary sidebar of the Main Home Page (Template: home.php).

This may sound like an odd thing to want to do, but I need to have content in sidebar2 that can be changed in the Admin section by (other) people who don’t have much technical expertise. So I am wondering if there is a template tag that can call up the content of a specific page, not the one being viewed? It seems like it should be simple, but I am not incredibly experienced with PHP and I can’t seem to find any template tags that are ready-made to do this.

Any suggestions would be welcome.