Genesis 26:28

25 and he buildeth there an altar, and preacheth in the name of Jehovah, and stretcheth out there his tent, and there Isaac`s servants dig a well.

26 And Abimelech hath gone unto him from Gerar, and Ahuzzath his friend, and Phichol head of his host;

27 and Isaac saith unto them, `Wherefore have ye come unto me, and ye have hated me, and ye send me away from you?`

28 And they say, `We have certainly seen that Jehovah hath been with thee, and we say, `Let there be, we pray thee, an oath between us, between us and thee, and let us make a covenant with thee;

29 do not evil with us, as we have not touched thee, and as we have only done good with thee, and send thee away in peace; thou [art] now blessed of Jehovah.`

30 And he maketh for them a banquet, and they eat and drink,

31 and rise early in the morning, and swear one to another, and Isaac sendeth them away, and they go from him in peace.