Different people call Him by different names according to their languages.

We should all worship the same God and we should worship Him the way He wants us to. If we read our holy books, we find that the way of worshipping is also the same.

The Hindu way is the 8 part (I forgot the original name) and the only way one can touch 8 parts of the body is the way Muslims do in prostration, hindus do in “Sashtanga Namaskara(eight-limbed salutation) – 1 forhead, 1 nose, 2 hands, 2 feet and 2 knees.
Christian way is also the same.

If we read our books well, then I think that the differences will reduce and we will be have more unity and tolerance.

No religion says that non belivers will go to hell. It’s only up to God to judge us whether we lead a good life or not.
So I would never say I’m going to heaven, or someone else is, just because they dont belive in, what i belive is true.. We know that God loves everyone and he is our Judge. Most importanly, he is our best friend. If you follow him with your heart and mind, he will reward you.
Don’t forget all religions are just a median to God. Whatever you are, if you follow it properly, you will reach God. Don’t worry too much about what people have to say, we as people are very limited. Every religion’s concept of God is practically the same though. it concentrates on love and being a good person. Therefore, murder, theft, lies, etc. are forbidden altogether.