This image is from http://www.nebraskahistory.org/sites/mnh/patchwork_lives/believing.htm
A website which has images of other quilts that reflected the maker's faith. From the website:
"The pattern is composed nearly entirely of triangles. The "leaves" of the tree are triangles sewn together to create two-color squares. The squares were carefully stitched "on point," in diagonal strips that made up the tree's bower. It took great attention to detail to place the squares accurately to create the rows of colors."