Quran tells us:
About the Route & Rewards of the Right Path
17:53] And say to My servants (that) they speak that which is best; surely the Shaitan sows dissensions among them; surely the Shaitan is an open enemy to man.
[41:30] (As for) those who say: Our Lord is Allah, then continue in the right way, the angels descend upon them, saying: Fear not, nor be grieved, and receive good news of the garden which you were promised.
[41:31] We are your guardians in this world’s life and in the hereafter, and you shall have therein what your souls desire and you shall have therein what you ask for:
[41:32] A provision from the Forgiving, the Merciful.
[41:33] And who speaks better than he who calls to Allah while he himself does good, and says: I am surely of those who submit?
[41:34] And not alike are the good and the evil. Repel (evil) with what is best, when lo! he between whom and you was enmity would be as if he were a warm friend.
[41:35] And none are made to receive it but those who are patient, and none are made to receive it but those who have a mighty good fortune.
[41:36] And if an interference of the Shaitan should cause you mischief, seek refuge in Allah; surely He is the Hearing, the Knowing.
[33:70] O you who believe! be careful of (your duty to) Allah and speak the right word,
[33:71] He will put your deeds into a right state for you, and forgive you your faults; and whoever obeys Allah and His Messenger, he indeed achieves a mighty success.
34:37] And not your wealth nor your children, are the things which bring you near Us in station, but whoever believes and does good, these it is for whom is a double reward for what they do, and they shall be secure in the highest places.
17:19] And whoever desires the hereafter and strives for it as he ought to strive and he is a believer; (as for) these, their striving shall surely be accepted
Quran also tells us:
About the Pitfalls & Punishments
[41:40] Surely they who deviate from the right way concerning Our communications are not hidden from Us. What! is he then who is cast into the fire better, or he who comes safe on the day of resurrection? Do what you like, surely He sees what you do.
41:46] Whoever does good, it is for his own soul, and whoever does evil, it is against it; and your Lord is not in the least unjust to the servants.
41:49] Man is never tired of praying for good, and if evil touch him, then he is despairing, hopeless.
[41:50] And if We make him taste mercy from Us after distress that has touched him, he would most certainly say: This is of me, and I do not think the hour will come to pass, and if I am sent back to my Lord, I shall have with Him sure good; but We will most certainly inform those who disbelieved of what they did, and We will most certainly make them taste of hard chastisement.
41:51] And when We show favor to man, he turns aside and withdraws himself; and when evil touches him, he makes lengthy supplications.
17:18] Whoever desires this present life, We hasten to him therein what We please for whomsoever We desire, then We assign to him the hell; he shall enter it despised, driven away.