31 Early the next morning the men swore an oath to each other. Then Isaac sent them on their way, and they went away peacefully.

Read Genesis 26:31 Using Other Translations

And they rose up betimes in the morning, and sware one to another: and Isaac sent them away, and they departed from him in peace.
In the morning they rose early and exchanged oaths. And Isaac sent them on their way, and they departed from him in peace.
Early the next morning, they each took a solemn oath not to interfere with each other. Then Isaac sent them home again, and they left him in peace.