For me, one of the classic interpretations of this Biblical passage about the seed growing automatically (Mark 4:26) was written by Martin Luther when he said about this text: "After I preach my sermon on Sunday, when I return home, I drink my little glass of Wittenberg beer and I just let the gospel run its course." I like that. Luther said that after he pounded on the pulpit and expounded the gospel, he would go home and pull out the Sunday newspaper, and pull out his glass of warm Wittenberg beer and start to drink it and enjoy the afternoon. Luther knew that the power of his sermon was not based on the power of his theological acuity. He knew that the power of his sermon was not based on his eloquence or his abilities. He knew that the power of the sermon would have no effect whatsoever unless the very Word of God got into a person's heart. Luther knew that he couldn't do that. It was the Holy Spirit who did that. Luther keenly understood the power of the Word.