Perfection is a malleable thing. To Christians humans are made in gods image, including emotions. In the minds of people they only think of the emotions that are reflected by god as the positive ones; like caring, empathy, love, ect. But if you take into account that god made everything it is reasonable to say that god gave us the negative emotions as well, since Satan (gods creation) harbored these feelings when it made Adam and eve sin in the garden of eden. Even if god only has positive emotion it does have emotion.