Valentin Weigel preaches about the deep connection between Astrology and Theology, emphasizing that Astrology, as the study of natural wisdom, must be governed and guided by Theology, which is the saving knowledge of divine and supernatural things. He highlights the importance of surrendering to God and allowing the Spirit of God to lead and transform one's nature, overcoming the influence of the stars and the sinful inclinations of the flesh. Weigel teaches that through the exercise of sanctifying the Sabbath, one can transmute from a worse nature to a better one, by aligning with the Spirit of God within, ruling over the internal stars of concupiscences, and walking in the light of grace.