Ezekiel 4:4-5

Then [bound as you are] lie upon your left [and north] side to bear symbolically the iniquity of the house of the ten tribes of Israel upon that side. According to the number of days that you shall lie upon it you shall bear their iniquity. For I have laid upon you the years of their iniquity, according to the number of the days, 390 days [representing 390 years]; so you shall bear the iniquity of the house of Israel.