Ezekiel 4:3

4:3 Then for your part take an iron frying pan and set it up as an iron wall between you and the city. Set your face toward it. It is to be under siege; you are to besiege it. This is a sign for the house of Israel.

Ezekiel 5:2

5:2 Burn a third of it in the fire inside the city when the days of your siege are completed. Take a third and slash it with a sword all around the city. Scatter a third to the wind, and I will unleash a sword behind them.