It's because their expertise was being unvalued.

因为他们的专业知识没有得到重视。

No minister need come; nor need anything be said over me. --I tell you I have nearly attained my heaven; and that of others is altogether unvalued and uncovered by me.

需要牧师来；也需要对念叨些什么。——告诉要到达的天堂了；别人的天堂在毫无价值的，也希罕。"