Chesed

At long last we move to the sphere of Chesed. This is the sphere of Love and Compassion.

Chesed's relationship to Geburah is similar to the relationship between Hod and Netzach - in essence they are two sides of the same coin. It is impossible to love something without also willing it to come closer to yourself (feel free to argue this) and without Chesed there would be no driving force behind Geburah.