In the Holy Land, there is much solid rock, whether exposed, under a couple inches or under ten or more feet of soil. To build, one digs down however far it takes to use the foundation of solid rock. People build in the summer when it is dry not raining, yet it is hot. It is very hard work to break through the clay and dig down to solid rock. One may be tempted to skip the harder part, yet a sure foundation is essential to survive the winter floods.[i]
Jesus said, “I will show you what someone is like who comes to me, hears my words, and acts on them.” Hearing and doing Jesus’ words take great effort, like digging down through hard clay under hot sun. This parable ends Jesus’ Sermon on the Plain in Luke and another version ends the Sermon on the Mount in Matthew.[ii] Jesus ends with a call for necessary, risky, costly action.