The section of the Prophets is divided really into two parts, because there are two types of writing in the prophetic section of the Bible.

先知书》里可以分成两部分,因为在先知书这篇中有两组不同风格的著作。

耶鲁公开课 - 旧约导论课程节选

in both groups: the 250 here versus 250 here, which is significant sample size.

在这两组之间，样本规模相同的两组间。

哈佛公开课 - 幸福课课程节选