I have been working on a commentary on the Psalms. I have decided to compile some helpful links that I discovered during my research. It includes a mix of exegetical and sermonic links. Here is what I have for Psalm 50 (in no particular order). Feel free to mention any that you find helpful in the comments section.
The Text this Week: http://www.textweek.com/writings/psalm50.htm
Ray Stedman., “Here Comes the Judge,” Psalm 50: https://www.raystedman.org/old-testament/psalms/here-comes-the-judge
Into the Word with Paul Carter: https://ca.thegospelcoalition.org/into-the-word/psalm-50
Analysis by C. J. Labuschagne: https://www.labuschagne.nl/ps050.pdf
William Barrick’s notes: https://drbarrick.org/files/studynotes/Psalms/Ps_050.pdf
Psalm 50 devotional: https://www.generations.org/devotionals/61
Martyn Lloyd-Jones, Dead Religion: https://www.mljtrust.org/sermons-online/psalms-50-1-23/dead-religion