Why are you interested for this job?

Believe your skills, abilities and experience (education, etc) are a good fit with this particular position.

Because your talents, skills, experience DO match the job specs

Also mention the all the positive aspects about the company (financially, etc) and its good reputation and history within the industry (whatever the industry).

***you know this because you googled the company and read up on it BEFORE the interview and it's a decent, solid company. If it were NOT a solid company, you wouldn't be interesting in working there anyway and you wouldn't be on this interview...right? Right.