Johannes Tauler, a German Dominican mystic, began preaching Rhineland Mysticism around 1330, emphasizing the 'ground of the soul' and the necessity of total surrender to divine will (Gelassenheit). His teachings sought to deepen the spiritual lives of individuals, encouraging a personal relationship with God. Tauler's influence contributed to the development of Christian mysticism and the broader spiritual landscape of the Middle Ages.

Johannes Tauler's preaching of Rhineland Mysticism in 1330 emphasized personal spiritual experience, which significantly influenced the vocabulary of German mystical poetry. His ideas paved the way for later movements, such as Pietism and Romanticism, that prioritized subjective depth and emotional authenticity in poetic expression.