When going for a new job you want to set yourself aside from all of the other applicants and be memorable. Setting yourself apart from the rest of the applicants gives you a better chance of getting the job.
Soft skills are the skills we use to communicate with those around us. They help us to be more diplomatic, respectful, and professional even when presented with frustrating situations. When being evaluated for an interview or promotion your soft skills are what they look at when determining if you will “be a good fit” with the team.