Gen 21:23

וְעַתָּ֗ה הִשָּׁ֨בְעָה לִּ֤י בֵֽאלֹהִים֙ הֵ֔נָּה אִם־תִּשְׁקֹ֣ר לִ֔י וּלְנִינִ֖י וּלְנֶכְדִּ֑י כַּחֶ֜סֶד אֲשֶׁר־עָשִׂ֤יתִי עִמְּךָ֙ תַּעֲשֶׂ֣ה עִמָּדִ֔י וְעִם־הָאָ֖רֶץ אֲשֶׁר־גַּ֥רְתָּה בָּֽהּ׃

Now, therefore, swear to me here before God that you will not deal falsely with me or my children or descendants. Show to me and to the country in which you reside the same kindness that I have shown to you.”