What lens should i buy for sony a6000?

I mostly just want to use the video feature. I travel and make recap videos and usually just use my iphone 6 and gopro hero 3 but now want more. The a6000 caught my eye and if I buy it i want to get the right lens. I film moving objects/people/animals/cars/etc and im usually have no other equipment on me so usually am holding it in my hand while panning. A good stabilizer. Im not into macro and the gropro is more than enough wide angle. I want a replacement for my iphone 6. I will choose best answer.

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