using Samsung galaxy s3 by Verizon wireless in India

[Nc Di]

I have Samsung galaxy s3 by Verizon wireless, I am going to India for a month and do not have WiFi at my parents' home there.
May I get some suggestions what should I get for a Sim card there to use on my phone and tablet galaxy s4? so I can have access to phone, text and WiFi - internet?
I am leaving in 4 days
Thanks a lot in advance .