OK ppl !!
ALLAH comes is a form of the word ELAH which is different from God :
Elah means the worshiped ,and like God can be any God Elah can also be any worshiped thing even if it is a rock or a tree like the Kufar in our prophets time for example.....thus the shahada : LA elaha ela Allah...
Well. Let me say this....
This is maybe one of the hardest things for non Muslims to understand about Islam cause you will have to study all the aspects of religion and realize the greatness and completeness of it all to understand why Jihad and what it means ..... theres also the other...