Ok, let me be blunt— I’ve been attending church all my life and
I’ve never heard that comparison in sermons, or in Bible studies.
I’m completely stumped!?!
Oh OK. Well the basic gist is the 7 feasts foreshadow our lord's redemption from beginning to end. Instead of me typing it all out, you can read this explanation. There are many of these on the internet; I just picked this one at random
7 Feasts that Point to Christ Explained
https://www.sermoninfo.com/7-feasts-that-point-to-christ-explained.html