This can be considered a genuine questions. Some say there can be more than one God because followers of monoism have the belief of one God as a pre-concieved notion and they are intolerant towards polytheistic believes and practices. Sikhi has an answer to this. There can be only one God because the God is Formless and there can only be one formless as there are no physical distinctions / divisions like physical deities. Such God is not dependant on 5 elements to exist.