And the reason is because Daniel is an older apocalyptic, prophetic text that was heavily influenced on early Christian literature.

因为但以理书是更古老的，有关天启预言的文本,对早期基督教文学有深远影响。

耶鲁公开课 - 新约课程节选

You have the three major prophets, Isaiah, Jeremiah and Ezekiel, and then the twelve minor prophets, which in the Hebrew Bible get counted together as one book, because those twelve are very small.

先知书里有三大预言家，以塞亚，耶利米和以西结，后来还有12个小先知，他们因为很小所以，全部被收入了一卷。

耶鲁公开课 - 旧约导论课程节选