In the first year of Darius son of Xerxes, a Mede by descent, who was made ruler over the kingdom of the Chaldeans—
In this chapter Daniel will explain to us two things. First, how very ardently he was accustomed to pray when the time of redemption, specified by Jeremiah, drew nigh; and next, he will relate the answer he received from God to his earnest entreaties. These are the two divisions of this chapter.
We left Daniel, in the close of the foregoing chapter, employed in the king's business; but here we have him employed in better business than any king had for him, speaking to God and hearing from him, not for himself only, but for the church, whose mouth he was to God, and for whose use the oracles of God were committed to him, relating to the days of the Messiah.
Commenting on Daniel 9:1-3
In the first year of Darius the son of Ahasuerus, of the seed of the Medes,.... This is the same with Darius the Median, that took the kingdom after the death of Belshazzar; so called, to distinguish him from Darius the Persian; and yet Porphyry has the gall to assert that this was Darius the Persian, under whom the temple was built, that Daniel might...