Daniel prays the prophecies of Jeremiah.
Daniel 9:1-3 (ESV)
1 In the first year of Darius the son of Ahasuerus, by descent a Mede, who was made king over the realm of the Chaldeans—
2 in the first year of his reign, I, Daniel, perceived in the books the number of years that, according to the word of the Lord to Jeremiah the prophet, must pass before the end of the desolations of Jerusalem, namely, seventy years.
3 Then I turned my face to the Lord God, seeking him by prayer and pleas for mercy with fasting and sackcloth and ashes.
Jeremiah 25:11 (ESV)
11 This whole land shall become a ruin and a waste, and these nations shall serve the king of Babylon seventy years.
Two Results:
1. Heavenly Movement
Daniel 9:20-21 (ESV)
20 While I was speaking and praying, confessing my sin and the sin of my people Israel, and presenting my plea before the Lord my God for the holy hill of my God,
21 while I was speaking in prayer, the man Gabriel, whom I had seen in the vision at the first, came to me in swift flight at the time of the evening sacrifice.
2. Earthly Fulfillment
Ezra 1:1-2 (ESV)
1 In the first year of Cyrus king of Persia, that the word of the Lord by the mouth of Jeremiah might be fulfilled, the Lord stirred up the spirit of Cyrus king of Persia, so that he made a proclamation throughout all his kingdom and also put it in writing:
2 “Thus says Cyrus king of Persia: The Lord, the God of heaven, has given me all the kingdoms of the earth, and he has charged me to build him a house at Jerusalem, which is in Judah.