Брак в Кане Галилейской
Oeser's chief importance was as a teacher. He was the drawing teacher of Johann Wolfgang Goethe, with whom he kept up friendly relations afterwards at Weimar. Besides a number of decorative works, mostly ceilings, he painted mythological and religious canvases and portraits, among the best being: "The Artist's Children" (1766, Dresden Gallery), "Marriage at Cana" (1777) and four others in Leipzig Museum, and "The Painter's Studio" (Weimar Museum). His best effort in sculpture is the monument of Elector Frederick Augustus (1780) on the Königsplatz in Leipzig, which he created together with his student and architect Johann Carl Friedrich Dauthe.