Eliezer prayed, “Let it be that the maiden to whom I will say, ‘Please tilt your pitcher so that I may drink,’ and she replies, ‘Drink, and I will also give water to your camels,’ will be the one whom You have designated for Your servant Isaac.”
Since G‑d lacks nothing, generosity is the primary way in which He relates to the world. For the same reason, generosity is the natural hallmark of people who feel closely connected to G‑d. In contrast, the hallmark of evil is selfishness. No matter how much an evil person possesses, he remains unsatisfied, so he seeks only to take and never to give.
Eliezer therefore sought a woman for Isaac who would display kindness. When Rebecca went beyond fulfilling Eliezer’s specific request by offering to also water his camels, he understood that she was a G‑dly person and thus a fitting match for the son of Abraham.
By demonstrating kindness to others, we too are “matched” with the most worthy partners – whether soul-mates, friends, business partners, or callings in life.