Reading "Now there were four leprous men at the entrance of the gate; and they said one to another: 'Why do we sit here until we die? If we say: "We will enter into the city," then the famine is in the city, and we shall die there; and if we sit still here, we die also. Now therefore come, and let us go to the host of the Arameans; if they save us alive, we shall live; and if they kill us, we shall but die,’" and "And there was a famine in the land; and Abram went down into Egypt to sojourn there," the Rabbis deduced that when there is a famine a place, one should migrate elsewhere. And the Gemara taught that the Rabbis cited in addition to because one might think from that this advice applies only where there is no danger to life in the destination. So they also cited "Now therefore come, and let us go to the host of the Arameans; if they save us alive, we shall live."