Comfort is a word seldom associated with religious faith by those who are not Christians. Doesn't religion make people uncomfortable with its demands? Isn't life more comfortable when we just live the way we want? Who needs to worry about a judgmental God watching our every move? Even the word Jesus is enough to cause people to squirm in their seats.However, for many Christians the words Jesus and comfort are inextricably linked. In her classic work, God of All Comfort, Hannah Whitall Smith describes why faith in the Christian God leads to a comfort and joy that cannot be found elsewhere. Without Christ, life is little more than living through doubt, fear, and anxiety. In her inspirational work, Smith reminds the reader of the reality of God's promises to his people. With Christ, doubt, fear, and anxiety are obsolete feelings. Hanna was raised in a strict Quaker home and was given to morbid introspection that found little relief until her marriage to Robert Piersall Smith in 1851.

They were both converted under Plymouth Brethren influence in 1858 and in 1867 had a new experience of faith that propelled them on a speaking tour of the United States and Europe. Their "Higher Christian Life" meetings in England were exceedingly popular, partly because of D. L. Moody's success there.They remained in England due to Robert's declining health and observed the founding of the Keswick Convention in 1874, an outgrowth of their conferences. Trouble followed, however. Robert began to entertain notions of spiritual wifery, was criticized, and eventually claimed to be a Buddhist.Hannah was the author of the spiritual classic, The Christian's Secret of a Happy Life (1875) and later developed ideas on the final restitution of all things, diverted herself into social causes and writing.

She produced The Unselfishness of God and How I Discovered It in 1903. A year later she was stricken with arthritis. Although confined to a wheelchair and in much pain, she maintained an optimistic spiritual outlook until her death.