Ah! Shucks! Someone found me!
And here I thot I was hidin' out!
Have ya heard of a Jesse Tree? It's very similar to Jesus' birthday cake. I have a book on the Jesse tree and it includes devotions and scriptures. Perhaps one or more of the ones listed would do for your cake.
The Advent Jesse Tree: Devotions for Children and Adults to Prepare for the Coming of the Christ Child at Christmas. By Dean Meador Lambert. 1988.