why do we say god is one
Answers
I think that you want some solid proof for it. So, here it is.
1)—Human beings made by God are all similar in all corners of the world such that an American doctor can treat a North Korean man and vice -versa. These are two corners of the world and if there were separate Gods for them, the human beings also would have been different. Doctor of the area of one God will not be able to treat men of other God.
2)—The air of the whole world is getting mixed up without any boundary of different Gods which would have been the case if there were different Gods. Same thing applies to ocean waters.
3)—certain species of fish and birds move around the borderless world. It can happen only if there is only one God.
4)—God exists and is one. Man has existed for very very long and is still dependent on God's machinery. Despite we having access to millions and millions of working "God made" machines like our breathing system, blood circulation & sensation transmission systems, for reverse engineering, we have failed to duplicate these and are still not manufacturing these in mass along with organs like kidney, liver, pancreas, heart etc. and wait for a person to die so a to harvest his organs to be put on another who has damaged these. This is about physical matters of God which are easy to duplicate. So, when we have failed in it, what to talk of non physical matters like traits, destiny, soul, conscience etc. If these were not God made, we humans would have manufactured these at will and run the universe with designed species in a controlled atmosphere without giving death to any. Let us hope that it will be done one day. It must be taken as a challenge by the scientists and if they show good prospects of duplicating, there would not be any lack of financing. But, they have to show solid progress instead of giving opinions.
I am now concluding at this stage instead of writing further.