Tawhid, The Unity of God from the Holy Qur'an

Surah Bani-Israel, n.17

This is of what your Lord has revealed to you of wisdom, and do not associate any other god with Allah lest you should be thrown into hell, blamed, cast away (17:39)

What! has then your Lord preferred to give you[^1] sons, and (for Himself) taken daughters from among the angels? Most surely you utter a grievous saying.

Say: If there were with Him gods as they say, then certainly they would have been able to seek a way to the Lord of power[^2]. (17:42)

Glory be to Him and exalted be He in high exaltation above what they say[^3]. (17:43)

The seven heavens declare His glory and the earth (too), and those who are in them; and there is not a single thing but glorifies Him with His praise, but you do not understand their glorification; surely He is Forbearing, Forgiving. (17:44)

[^1]: This refers to people holding angels as daughters of God and worshipping them as deities.

[^2]: ‘Arsh’ - the throne of Supreme Power and authority.

[^3]: The concepts about Him Rv. 42