Genesis 15:8-10

New International Version - UK

⁸ But Abram said, ‘Sovereign Lord, how can I know that I shall gain possession of it?’

⁹ So the Lord said to him, ‘Bring me a heifer, a goat and a ram, each three years old, along with a dove and a young pigeon.’

¹⁰ Abram brought all these to him, cut them in two and arranged the halves opposite each other; the birds, however, he did not cut in half.