 That same year he also published "Anti-Bellarminus" (1610).His statements in the "Tractatus" on God, the divine attributes, predestination, and Christ led the Counter-Remonstrants to accuse him of Socinianism and heterodoxy.The Heidelberg theologians condemned the book; Vorstius replied in his "Protestatio epistolica contra theologorum Heidelbergensium" (The Hague, 1610).