Daniel 9:2-3

2In the first year that Darius was king, I, Daniel, was reading God's book. I read the message that the Lord had given to his prophet, Jeremiah. He told Jeremiah that Jerusalem would continue to be a heap of stones for 70 years.

3So I turned to my Lord God, to ask him for help. I prayed to him and I ate no food. I wore clothes of rough sackcloth. I put ashes on myself to show that I was upset.