Daniel 9:1-3; Jeremiah 25:11-12; Jeremiah 29:10

Daniel 9:1-3

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 25:11-12

11 This whole land shall become a ruin and a waste, and these nations shall serve the king of Babylon seventy years.

12 Then after seventy years are completed, I will punish the king of Babylon and that nation, the land of the Chaldeans, for their iniquity, declares the LORD, making the land an everlasting waste.

Jeremiah 29:10

10 "For thus says the LORD: When seventy years are completed for Babylon, I will visit you, and I will fulfill to you my promise and bring you back to this place.