Fighting has been enjoined upon you while it is hateful to you. But perhaps you hate a thing and it is good for you; and perhaps you love a thing and it is bad for you. And Allah Knows, while you know not. - Quran Al-Baqarah(The Cow) 2:216 (islam)
Say, "Indeed I fear, if I should disobey my Lord, the punishment of a tremendous Day." - Quran Az-Zumar(The Groups) 39:13 (islam)
And those who strive for Us - We will surely guide them to Our ways. And indeed, Allah is with the doers of good. - Quran Al-'Ankabut(The Spider) 29:69 (islam)
[9]He has succeeded who purifies it,
[10]And he has failed who instills it [with corruption]. - Quran Ash-Shams(The Sun) 91:9-10 (islam)
And the Jews say, "The hand of Allah is chained." Chained are their hands, and cursed are they for what they say. Rather, both His hands are extended; He spends however He wills. And that which has been revealed to you from your Lord will surely increase many of them in transgression and disbelief. And We have cast among them animosity and hatred until the Day of Resurrection. Every time they kindled the fire of war [against you], Allah extinguished it. And they strive throughout the land [causing] corruption, and Allah does not like corrupters. - Quran Al-Ma'idah(The Table Spread) 5:64 (islam)
And We did not send before you any messenger or prophet except that when he spoke [or recited], Satan threw into it [some misunderstanding]. But Allah abolishes that which Satan throws in; then Allah makes precise His verses. And Allah is Knowing and Wise. - Quran Al-Hajj(The Pilgrimage) 22:52 (islam)