Which lenses for weddings...?

[roberthans]

Im still fairly new to photography and I just purchased a camera and am starting to get my gear together. I have a 28-70mm 2.8-5.6 that came with my Sony A7ii.

What other lenses should I invest in....?

My buddy is selling me his ZEISS 50mm 1.8, so I have that ones coming.

I didn't find the right solution from the internet.
References:
- http://www.thephotoforum.com/threads/which-lenses-for-weddings.412785/
- Professional Infographic Video Pricing

please help.
Thanks.