Lenten Book Study discussion

Welcome to the First Day of our Lenten Book Study! I'm so grateful you've joined us for this journey.
Hopefully this will be a place of reflection, of sharing, of questioning and those great "a-ha" moments.
Feel free to comment on the posts, to add your own questions and comments, to add and expand the conversations that are happening.
To begin with I was intrigued by Bruce Reyes-Chow's description of the "symbol of unknown origin". It got me thinking what symbols both in and of the church do you think have become obsolete or are no longer generally known? Are there any that we should revisit or reclaim? Are there any we need to release?

as a senior I even found the glossary interesting-the definitions