Genesis 26:28-31

28And they said, We saw certainly that the LORD was with thee: and we said, Let there be now an oath between us, even between us and thee, and let us make a covenant with thee;1 29That thou wilt do us no harm, as we have not touched thee, and as we have done to thee nothing but good, and have sent thee away in peace: thou art now the blessed of the LORD.2 30And he made them a feast, and they ate and drank. 31And they rose early in the morning, and swore one to another: and Isaac sent them away, and they departed from him in peace.