Genesis 15:11

And the birds of prey, &c. The birds of prey, regarded as unclean, swooping down threatened to carry off the pieces of flesh. This would have interrupted the ceremony with an evil omen, polluted the sacrifice, and impaired the covenant. Abram drives away the birds of ill omen. In the context, these birds evidently symbolized the Egyptians, who threatened, by enslaving Israel in Egypt, to frustrate the fulfilment of the Divine promise to the seed of Abram. The chasing away of the birds typified the surmounting of all obstacles.

The LXX συνεκάθισεν αὐτοῖς = "he sat with them" for "he drove them away" (reading vay-yêsheb ittâmfor vay-yasshêb ôthâm) is a strange example of the mistakes arising from Hebrew writing without vowel points.