Luther's pastoral theology was directly influenced by his intense and sometimes prolonged experiences with the Anfechtungen--spiritual trials, despondencies, ambivalences, 'ups and down' in faith experiences.
Begalke, M. Vernon
"Luther's Anfechtungen: an important clue to his pastoral theology,"
Consensus: Vol. 8
, Article 1.
Available at: http://scholars.wlu.ca/consensus/vol8/iss3/1