Genesis 15:9-10

9The Lord said to Abram, ‘Bring a young cow, a goat and a male sheep to offer them to me. Each animal must be three years old. Also bring a dove and a young pigeon.’

10Abram brought the three animals and the two birds to offer to God. Abram cut each animal in two pieces. He put the halves opposite each other. But he did not cut the birds in two pieces.