Lament is a cry of belief in a good God, a God who has His ear to our hearts, a God who transfigures the ugly into beauty. Complaint is the bitter howl of unbelief in any benevolent God in this moment, a distrust in the love-beat of the Father's heart.
Ann Voskamp (2011). “One Thousand Gifts: A Dare to Live Fully Right Where You Are”, p.175, Zondervan