An account of his theological position, derived from the treatise of Babhai De unione, will be found in Labourt, op. cit.
His Irenicum vere christianum is directed against David Pareus (1548-1622), professor primarius at Heidelberg, who in Irenicum sive de unione et synodo Evangelicorum (1614) had pleaded for a reconciliation of Lutheranism and Calvinism; his Calvinista aulopoliticus (1610) was written against the "damnable Calvinism" which was becoming prevalent in Holstein and Brandenburg.
Pontificis, dedicated to the new pope (John XXIII.); De modis uniendi ac reformandi ecclesiam and De difficultate reformationis in concilio universali, advocating the convocation of a council, to which the pope is to bow; Contra dampnatos Wiclivitas Pragae, against the Hussites; Jura ac privilegia imperii, a glorification of the empire in view of the convocation of the council of Constance; Avisamenta pulcherrima de unione et reformatione membrorum et capitis fienda, a programme of church reform based on his experiences of the evils of the papal system.