Over the years I have handled the issue of having a growing collection of commentaries with collections. I am thrilled to see particularly the 'type' and 'era' categories brought to the passage guide to eliminate some of this need.
If you would like to see more of this, there is a feedback suggestion to bring in 'theology system' which can be voted on:
https://feedback.faithlife.com/boards/logos-data-sets/posts/899
It is my understanding that Faithlife is already planing to continue to develop this.
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