Check these blogs out from Mike Abendroth for more information:
https://heidelblog.net/2022/06/my-pilgrimage-from-lordship-to-law-gospel/
https://heidelblog.net/2022/06/my-pilgrimage-from-lordship-to-law-gospel-part-2-test-case-the-rich-young-ruler/
https://heidelblog.net/2022/06/my-pilgrimage-from-lordship-to-law-gospel-part-3-assurance/