This popular Romanism was the greatest of all Gustavus's difficulties, because it tended to alienate the Swedish peasants.
He soon became prominent; first by his contributions to its organ the Messenger; then by The Anxious Bench - A Tract for the Times (1843), attacking the vicious excesses of revivalistic methods; and by his defence of the inauguration address, The Principle of Protestantism, delivered by his colleague Philip Schaff, which aroused a storm of protest by its suggestion that Pauline Protestantism was not the last word in the development of the church but that a Johannean Christianity was to be its outgrowth, and by its recognition of Petrine Romanism as a stage in ecclesiastical development.
Latimer himself also, in mentioning his conversion from Romanism about 1523, says that it took place after he was thirty years of age.
While he was fundamentally at one with Luther in opposing both Romanism and Calvinism, his mysticism led him to interpret justification by faith as not an imputation but an infusion of the essential righteousness or divine nature of Christ.
He stayed at Cassel till 1783, publishing in 1782 his Reisen der Papste, a book wherein certain leanings towards Romanism are visible.
In all their negotiations with Ormonde and Glamorgan, Henrietta Maria and the earl of Bristol, the pope and Rinuccini stood out for an arrangement which would have destroyed the royal supremacy and established Romanism in Ireland, leaving to the Anglicans bare toleration, and to the Presbyterians not even that.