Featured Image Not Appearing in Post

I have tried everything to get a featured image to appear on a recent post in the home page slide show. I went to the trouble shooting forum and tried some of the suggestions to no avail.

The website is: https://www.ahavatzion.org

The particular post is: https://www.ahavatzion.org/2012/11/family-friendly/

I have one image embedded, just cannot get a featured image to appear.