Gilbert Morris 
Pilgrim Song (House of Winslow Book #29) 

Like wayfarers before them in a foreign land, they learn to sing… Lewis Winslow has money, a large fancy house, and a bright future in business, but he’s lost his beloved wife and now fears he is losing his children as well. Josh seeks one thrill after another, while Jenny finds her excitement at society parties. Kat, an all-out tomboy, is living in her own world, and Hannah has become a recluse. Their father isn’t sure what to do about any of them.When the stock market crash robs the Winslows of the material comforts they have enjoyed, will they unite as a family? Lliving in poverty is like living in a foreign land for this Winslow family. The strength of their faith will determine whether they thrive–or merely survive–in the face of unfamiliar and fearsome hardship.