The latest issue of Tabletalk is on biblical dichotomies. I contributed an article on the dichotomy of flesh and Spirit/spirit, and I distinguish ten different contrasts:
“Flesh and Spirit.” Tabletalk 38, no. 10 (October 2014): 22–24.
Related: Let Go and Let God? A Survey and Analysis of Keswick Theology
Update on 8/23/2017: My latest book attempts to survey and analyze “let go and let God” theology more accessibly: