If someone....say, a certain fallen angel, had wanted to form a new religion that starts with Judaism and Christianity but turns them on their heads, it would look a lot like islam.
"Moreover, Allah even has no problem swearing by these pagan gods! Here are some references where Allah swears by the heavenly constellations:" (see ref below)
'By the Star when it goes down,' - S. 53:1
'So verily I call to witness the planets - that recede,' S. 81:15
'By the heaven, and At-Tariq (the night-comer, i.e. the bright star); S. 86:1 Hilali-Khan'
According to Islamic commentators, at-Tariq is the morning star which the pagans worshiped:
'And from his narration on the authority of Ibn 'Abbas that he said concerning the interpretation of Allah's saying (By the heaven and the Morning Star): '(By the heaven and the Morning Star) He says: Allah swears by the heaven and the morning star (Tanwîr al-Miqbâs min Tafsîr Ibn ‘Abbâs; source; underline emphasis ours)'
In these next references Allah swears by the sun and the moon:
'By the Sun and his (glorious) splendour; By the Moon as she follows him;' S. 91:1-2
'Nay, verily: By the Moon,' S. 74:32
The Islamic exegetes admit that Allah is swearing by the very object worshiped as a god!
(Nay, by the Moon) Allah swore by the moon (Tanwîr al-Miqbâs min Tafsîr Ibn ‘Abbâs; source)
… '(1) The moon, next after the sun, is the most striking luminary to our sight. Its reflected light has for us a greater mystery than the direct light of the sun, which looks to us like pure fire. The moon was worshipped as a deity in times of darkness…'(A. Yusuf Ali, fn. 5798, p. 1644; bold and italic emphasis ours)
Allah even prides himself on being the Lord of Sirius, the Dog-star which Yusuf Ali stated was worshiped by the pagans!
'That He is the Lord of Sirius (the Mighty Star);' S. 53:49
Ali wasn’t the only Islamic commentator to admit that the pagans worshiped Sirius:
'...and that it is He Who is the Lord of Sirius - this is a star [lying] beyond [the constellation of] Gemini, which was worshipped in the time of pagandom (jahiliyya); (Tafsir al-Jalalayn; source; underline emphasis ours)'
'(And that He it is Who is the Lord of Sirius) which was worshipped by Khuza'ah;' (Tanwîr al-Miqbâs min Tafsîr Ibn ‘Abbâs; source; underline emphasis ours)
And:
<'And that He is the Lord of Ash-Shi`ra.> Ibn `Abbas, Mujahid, Qatadah and Ibn Zayd said about Ash-Shi`ra that it is the bright star, named Mirzam Al-Jawza' (Sirius), which a group of Arabs used to worship.' (Tafsir Ibn Kathir; source; underline emphasis ours)
See: http://www.answering-islam.org/Shamoun/allah_swearing_by_idols.htm