Daniel 9:2

Jerusalem. He read attentively the sacred volumes, particularly the prophecy of Jeremias xxv. 11. and xxix. 10. Knowing that many predictions were conditional, he was afraid lest this might be so; notwithstanding a part of it seemed to be verified by the death of Baltassar. (Calmet) --- Darius had reigned in Persia before. He only ruled part of a year, at Babylon, the 70th of the captivity. (2 Paralipomenon xxxvi. 22.) Daniel perceiving that the time of the Jews' deliverance was at hand, prayed with great zeal and confidence. (Worthington)