To doubt God’s love ...
To doubt God’s love for us is the root of all spiritual problems (Mal. 1:2).
Hearts that have not personally experienced God’s perfect love
that was revealed by the death of Jesus on the cross are bound to fall into various temptations.
(As I am reading Iain M. Duguid & Matthew P. Harmon’s "Zephaniah, Haggai, Malachi" REFORMED EXPOSITORY COMMENTARY")