Emotion equates the physiological state of the listener with that of the speaker, which makes it more likely that the listener will process incoming information in a similar manner to how the speaker sees it.
Feelings Effect Receptiveness
If I feel happy and you feel sad, we are unlikely to interpret the same story in the same way. But if I can first help you feel as happy as I do, perhaps by sharing a joke, you will be more likely to interpret my message the way I do.
