إِنَّ إِلَهَكُمْ لَوَاحِدٌ Truly, your god is truly One!" [Qur'an 37:4]
[3:104] Let there arise out of you a band of people inviting to all that is good, enjoining what is right, and forbidding what is wrong: they are the ones to attain felicity.
[3:110] Ye are the best of Peoples, evolved for mankind, enjoining what is right, forbidding what is wrong, and believing in Allah. If only the People of the Book had Faith, it were best for them: among them are some who have Faith, but most of them are perverted transgressors.
[5:78] Curses were pronounced on those among the Children of Israel who rejected Faith, by the tongue of Dawud and of 'Isa, the son of Maryam, because they disobeyed and persisted in Excesses.
[5:79] Nor did they (usually) forbid one another the iniquities which they committed: evil indeed were the deeds which they did.
[7:165] When they disregarded the warnings that had been given them, We rescued those who forbade evil; but We visited the wrong-doers with a grievous punishment, because they were given to transgression.
[7:199] Hold to forgiveness; command what is right; but turn away from the ignorant.
[15:94] Therefore expound openly what thou art commanded, and turn away from those who join false gods with Allah.
[18:30] As to those who believe and work righteousness, verily We shall not suffer to perish the reward of any who do a (single) righteous deed.