You have to edit the Sidebar.php file and replace that text with your choice.
Wow! I have no idea what to do with this file. I did a search for “about this blog” but it’s not there.
Now what?
In the Disciple theme folder there is a file named “siderbar2.php”.
Open it with a plain text editor and find this;
<li class="widget">
<h2>About this blog</h2>
<p>This is a sidebar example to show how it could look. Customize your sidebar by adding Widgets in WP Admin > Design > Widgets or edit the sidebar files on your own.</p>
</li>
Edit it to your liking and save the changes.
That did it!
Thank you very much!
-Tracy