Solid Foundation . . . .
The right foundation makes the difference between something that lasts and something temporary. Jesus know that though foundations are invisible, they are vitally important to the strength and stability of the house, especially when it is battered by the elements. He also know the hearts of His listeners. They would be tempted to take the easy way, find shortcuts, or do things by halves to gain their objectives. The wise man builds his house upon the Rock.