This episode is dedicated to the last part of the Sermon on the Mount, which speaks about those who do God's will and those who build houses on sand and rock. Those who call on the name of God and even perform great works in that name but do not do God's will shall not inherit the Kingdom of Heaven.
Those who listen to God's words and do not do them are like a man who builds his house on sand. While those who do them are like a man who builds his house on a rock. The listeners and doers of God's words will overcome all life difficulties easily.