Probably the most immportant work on the history of justification, now in its 4th printing, is Alister McGrath's Iustitia Dei. It really needs to be offered by Logos.
An important work on the topic. I had to buy it on Kindle last year. I was surprised that Logos didn't have it yet.
There's at least one request in the current system here
but only with a surprising few number of votes, so I think there must have been other suggestions to fill this really large gap in the Logos offering.
EDIT: another one would be this:
People are asking for McGrath' books since "ancient times", see this thread from 2009
and luckily some are available, but some are lacking, especially "Iustitia Dei" and "Christian Theology"
logos this is a really important one
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I would love to have some books by Robert Alter in my Logos Library.
A well-written summary of the dynamics of the Council of Trent
This is a very readable and brief but well-written summary of the history of the Church councils.
The Lucado Life Lessons Study Bible would make for an excellent addition to the study Bible lineup at Logos, as well as add another of Max Lucado's resources to his collection. The print/eBook edition comes with the NKJV, but Logos could sell the notes standalone for any Bible translation.