Genesis 24:14

  14  I am waiting for a special sign to know which is the right young woman for Isaac. This is the special sign: I will say to the girl, 'Please put your jar down so I can drink.’ I will know if she is the right young woman if she says, 'Drink, and I will also give water to your camels.’ If that happens, then you will have proved that she is the right young woman for Isaac. And I will know you have shown kindness to my master.”