P. Schubert preaches on the parable of the sower from Matthew 13:18-23, emphasizing the importance of understanding and valuing the word of God to bear fruit. The sower represents God spreading His word abundantly, but the response of the hearers determines the outcome. Those who receive the word with understanding and allow it to take root in good soil bear much fruit, while those hindered by worldly cares, persecution, or hardness of heart fail to produce fruit. The sermon highlights the need for willingness to listen, understand, and apply God's word, striving for a fruitful life that glorifies Him.