Genesis 21:25-29

And Abraham reproved Abimelech because of a well of water, which Abimelech's servants had violently taken away.

And Abimelech said, I wot not who hath done this thing: neither didst thou tell me, neither yet heard I of it, but to day.

And Abraham took sheep and oxen, and gave them unto Abimelech; and both of them made a covenant.

And Abraham set seven ewe lambs of the flock by themselves.

And Abimelech said unto Abraham, What mean these seven ewe lambs which thou hast set by themselves?