Ezekiel 4:6-8

6“When you have completed these days, then lie down a second time, but on your right side, and bear the iniquity of the house of Judah 40 days – I have assigned one day for each year.

7You must turn your face toward the siege of Jerusalem with your arm bared and prophesy against it.

8Look here, I will tie you up with ropes, so you cannot turn from one side to the other until you complete the days of your siege.