Reddit mentions of Spirituality of the Cross Revised Edition

I spent three largely happy years as a not-so-crypto-Calvinist member of an LCMS congregation when I lived in a small town without any Reformed churches. I think the main benefit for Reformed folk from Lutherans is as a counterbalance to the excesses of broad evangelicism.

I learned a great deal in my time among the Lutherans, but oddly enough it pushed me deeper into the Reformed view of things. It was there that I really learned to appreciate things about my Reformed heritage that I hadn't learned growing up and as a young adult in Reformed churches.

• I learned to love singing a Psalm every week.
  
• I gained an appreciation for frequent observance of the Lord's Supper, and faced with the Lutheran doctrine of Real Presence, actually started to grasp the importance of the Reformed view of Christ's presence in the Supper.
  
• I gained a greater appreciation and conviction for infant baptism. Again, I wasn't convinced of the Lutheran position, but it helped me solidify my own.
  
  For anyone wanting to learn more about the Lutheran way, I woulld recommend The Spirituality of the Cross by Gene Veith.

Not OP, but I'd recommend the Small and Large Catechisms. Relatively short and simple to read; they're part of the official Lutheran confessions of faith; they're by Martin Luther; and they're free online at those links. Another good resource from a modern writer is The Spirituality of the Cross by Gene Edward Veith.

My top suggestion would be the Book of Concord and exploring the Just and Sinner Podcast archive. You will get a fair, balanced, and orthodox take on Lutheranism.

As others have said, Spirituality of the Cross is one of the better, single serving overviews of what Lutherans believe, as well.

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Here is a list of other Lutheran resources:

Lutheran Theology Books

1. Book of Concord
   
2. The Saving Truth: Doctrine for Laypeople: Kurt E. Marquart
   
3. Law and Gospel - Walther
   
4. Justification - Chemnitz
   
5. Loci Communes - Melanchthon
   
6. Liturgical Worship: A Lutheran Introduction
   
7. Hand of Faith - Pr. Jordan Cooper
   
8. A Case for Character - Pr. Joel Biermann
   
9. Justification and Rome - Pr. Robert Preus
   
   ​
   
   Websites
   
   
10. Just and Sinner
    
11. Infant Theology
    
12. Around the World Theology - great mailing list with free resources and daily devotionals run by Pr. Bryan Wolfmueller
    
13. Cranrach - Gene Veith
    
14. Steadfast Lutherans Blog
    
15. Gottesdienst Crowd Blog
    
16. Pr. Mark Surburg Blog
    
17. Will Weedon’s Blog - great for patristics and liturgy
    
    ​
    
    Journals
    
    
18. Concordia Theological Quarterly - Fort Wayne: Tons of free research articles and talks
    
19. Global Journal of Classical Theology - Listed at end of Montgomery’s History, Law, and Christianity
    
20. Concordia Journal - St. Louis: Tons of free research articles and talks
    
21. Lutheran Witness
    
    ​
    
    Podcast
    
    
22. Just and Sinner
    
23. Issues Etc.
    
24. Cross Defense (KFUO)
    
25. Concord Matters (KFUO)
    
26. Thy Strong Word (KFUO)
    
27. Gottesdienst Crowd
    
    ​
    
    YouTube
    
    
28. Jordan Cooper - Just and Sinner
    
29. Lutheran Satire
    
30. Pr. Bryan Wolfmueller
    
31. WEtv
    
    ​
    
    Apologetics
    
    
32. Spirituality of the Cross - Gene Edward Veith
    
33. Tractatus Logico Theologicus - John Warwick Montgomery
    
34. History, Law and Christianity - John Warwick Montgomery
    
35. God’s Inerrant Word - John Warwick Montgomery Edited on inerrancy
    
    ​
    
    Courses
    
    
36. Christian Doctrine - Concordia Seminary iTunes U
    
37. Philosophy 101 - Pr. Gregory Schulz Concordia University Wisconsin
    
38. Philosophy Kata Christon - Pr. Gregory Schulz Concordia University Wisconsin