笃诚

zhèng shì tā de zuò pǐn zhēn zhèng de jiē shì le tā de dǔ chéng yǐ jí yú shàng dì guān xi zhī wěi dà

正是他的作品真正地揭示了他的笃诚以及于上帝关系之伟大。

It is rather his work that reveals true greatness of his faith and his relationship to God.