Daniel 9:1-3

In the first year of Daryavesh the son of Achashverosh, a Mede by birth who was made king over the kingdom of the Kasdim -

in the first year of his reign, I, Dani'el, was reading the Scriptures and thinking about the number of years which ADONAI had told Yirmeyah the prophet would be the period of Yerushalayim's desolation, seventy years.

I turned to Adonai, God, to seek an answer, pleading with him in prayer, with fasting, sackcloth and ashes.