Good Morning Jerry,
Excellent question. WordPress does ship with a RSS widget that you can use to display posts from a feed in a widget area.
If you need to show a bit more that would typically fit in a widget, you might try a plugin called HungryFEED (https://wordpress.org/plugins/hungryfeed/). It allows you to add the entries in a feed to a page/post with a shortcode.
A shortcode is a small piece of text that you place into the content area of a page/post that on front end of your site will be transformed into something else. For this plugin, the shortcode looks like this:
[hungryfeed url="http://site.com/feed"]
where http://site.com/feed is the URL to the feed.
I have not tried out this plugin, but it has a good rating and number of downloads so that’s promising.
Have a good weekend,
Bill