Sailing between Batavia and Malacca (now Melaka), in western Malaysia, he chanced upon a Protestant pamphlet in Spanish entitled Diferencias de la Cristiandad (The Differences in Christendom).
Laevareisil Bataviast Lääne - Malaisiasse Malaccasse (nüüd Melaka), sattus talle kätte hispaaniakeelne protestantlik usutraktaat pealkirjaga „Diferencias de la Cristiandad ” (Lahknevused ristiusus).