Rashi on Genesis 24:14/רש"י על בראשית כ״ד:י״ד

1אתה הכחת HER THOU HAST APPOINTED — She is fit for him since she will be charitable and will therefore be worthy of admission into the house of Abraham. The word הכחת means selected; old French approuvest; English thou hast selected.

2ובה אדע This is a petition: “Let me know through her”.

3כי עשית חסד THAT THOU HAST SHOWN KINDNESS — if she is of his family and a fit companion for him I shall know that thou hast shown kindness to my master.