An-Nahl 16:51

Allah said, “Do not take two gods[31]. He is only One God, so fear Me alone.”

[31] i.e., more than one.

And Allāh has said, "Do not take for yourselves two[702] deities. He [i.e., Allāh] is but one God, so fear only Me."

[702] Meaning more than one.

51. And Allâh said (O mankind!): "Take not ilâhain (two gods in worship). Verily, He (Allâh) is (the) only One Ilâh[15] (God). Then, fear Me (Allâh جل جلاله) much [and Me (Alone), i.e. be away from all kinds of sins and evil deeds that Allâh has forbidden and do all that Allâh has ordained and worship none but Allâh][16].

[15] (V.16:51) Ilâh: He Who has all the right to be worshipped.
[16] (V.16:51) Narrated ‘Ubâdah رضي الله عنه: The Prophet صلى الله عليه وسلم said, "If anyone testifies that Lâ ilâha illallâh (none has the right to be worshipped but Allâh Alone) Who has no partners, and that Muhammad صلى الله عليه وسلم is His slave and His Messenger, and that ‘Îsâ (Jesus) عليه السلام is Allâh’s slave and His Messenger and His Word ("Be!" - and he was) which He bestowed on Maryam (Mary) and a spirit (Rûh ) created by Him, and that Paradise is the truth, and Hell is the truth, Allâh will admit him into Paradise with the deeds which he had done even if those deeds were few." (Junadah, the subnarrator said, " ‘Ubâdah added,
‘Such a person can enter Paradise through any of its eight gates he likes.’ ") (Sahih Al-Bukhari, Vol. 4, Hadith No. 644).

Allah hath said: Choose not two gods. There is only One Allah. So of Me, Me only, be in awe.