the command says nothing of fake gods or made up gods, it plainly says gods. and again, if they did not exist it would make no sense to say dont serve them. we would never tell our own children not to eat a cake off the table if there was no cake on the table, even more if we live in a world where other cakes do not exist.
When God says do not serve other gods,He does not mean that they exist,but whatever people views as a higher power,that they believe exists,do not serve them,but only the God of Israel,who proved He is the true God.
Isa 41:21 Produce your cause, saith the LORD; bring forth your strong reasons, saith the King of Jacob.
Isa 41:22 Let them bring them forth, and shew us what shall happen: let them shew the former things, what they be, that we may consider them, and know the latter end of them; or declare us things for to come.
Isa 41:23 Shew the things that are to come hereafter, that we may know that ye are gods: yea, do good, or do evil, that we may be dismayed, and behold it together.
Isa 41:24 Behold, ye are of nothing, and your work of nought: an abomination is he that chooseth you.
Isa 41:25 I have raised up one from the north, and he shall come: from the rising of the sun shall he call upon my name: and he shall come upon princes as upon morter, and as the potter treadeth clay.
Isa 41:26 Who hath declared from the beginning, that we may know? and beforetime, that we may say, He is righteous? yea, there is none that sheweth, yea, there is none that declareth, yea, there is none that heareth your words.
Isa 41:27 The first shall say to Zion, Behold, behold them: and I will give to Jerusalem one that bringeth good tidings.
Isa 41:28 For I beheld, and there was no man; even among them, and there was no counsellor, that, when I asked of them, could answer a word.
Isa 41:29 Behold, they are all vanity; their works are nothing: their molten images are wind and confusion.
Also God said that those false gods are the works of men's hands,which cannot do anything,cannot see,cannot eat,cannot hear,cannot smell,can do nothing,which God is stating they do not exist.
Deu 4:28 And there ye shall serve gods, the work of men's hands, wood and stone, which neither see, nor hear, nor eat, nor smell.
Isa 44:8 Fear ye not, neither be afraid: have not I told thee from that time, and have declared it? ye are even my witnesses. Is there a God beside me? yea, there is no God; I know not any.
Isa 43:10 Ye are my witnesses, saith the LORD, and my servant whom I have chosen: that ye may know and believe me, and understand that I am he: before me there was no God formed, neither shall there be after me.
Isa 43:11 I, even I, am the LORD; and beside me there is no saviour.
God said there is no God beside Him,He knows no other God,and there was no God formed before Him,and there will be no God formed after Him,so there is no other God but the God of Israel.
God is an omnipresent Spirit that fills all space,and has no beginning,for He was not created,and He is the first,and the last,so if God has no beginning,and always exists,and is the first,and the last,if there were any other gods out there they would have to be created by God who has no beginning,and is the first,and the last.
That is why God said there is no other God,but Him,and there will be no God formed after Him,because they would have to be created by God,and He did not do it.
Also God means supreme being,and God is an omnipresent Spirit that fills all space,for how can God create a God on that level,when He fills all space.
Also if God did create other beings that were more powerful than the angels,they still would not be gods,but advanced beings,and they would still be subject to God,but God created no such beings,and if He did mankind would not know about them anyway.
There are only 3 beings,God,angels,and people.
Also they would be made of physical matter,for all things are made of physical matter,even the angels,and even our glorified body,for even though angels,and our glorified body,are thought of as spiritual,they are still of physical matter,for all things are physical matter,but God's Spirit is the only substance not of the physical world.
There are no other gods,for if there were God would of had to create them,in which He said He said He did not,and also they would not be gods,but advanced beings,and be subject to God,and mankind would not know about them anyway,at least not on this earth.
God cannot create a God on His level,for He is an omnipresent Spirit that fills all space,and also He is the only substance that is not of physical matter,so God cannot create a God of His substance,because it is not to be found,but only God,and would have to be made of physical matter,but what kind of God is that,for God has the ability to assemble,and disassemble,physical matter at any time.
There cannot be anything called a God that could even compare to God,for God's Spirit is greater than the energizer bunny,it keeps going and going,and made a substance that cannot be found anywhere,but Himself,and God's Spirit is indestructible,cannot blow up,cannot dissolve,cannot disintegrate,cannot deteriorate,cannot wear out,cannot decay,cannot decompose.
God is so awesome that it causes many to not believe in Him,that He is omnipresent filling all space,everything that there is to possibly know,He knows it,any power that is to be had,He possesses it,anything there is to see down to the smallest thing,He sees it,anything that there is to hear down to the faintest sound,He hears it,every little particle,every atom,God knows every thing,and could make a creature a trillion miles long,by a trillion miles high,by a trillion miles thick,that has the power to throw a boulder the weight of 100,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 lbs. through the atmosphere for 100,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 miles,and God could disassemble Him and bring the creature back to before it was created.