I purchased the Gold package some time ago. I'm wondering if anyone knows of a resource (book, commentary, etc.) that might be available to me that basically identifies where the Bible is quoting from other biblical passages? I've started a study of the book of Hebrews, and right in the first chapter there are many places where Paul seems to be quoting from what I assume are Old Testament sources. Is there any resource in Logos that catalogs these types of occurrences?