Genesis 24:13-14 KJV

13 Behold, I stand here by the well of water; and the daughters of the men of the city come out to draw water:

14 And let it come to pass, that the damsel to whom I shall say, Let down thy pitcher, I pray thee, that I may drink; and she shall say, Drink, and I will give thy camels drink also: let the same be she that thou hast appointed for thy servant Isaac; and thereby shall I know that thou hast shewed kindness unto my master.