The answer is very simple:

"It is those who believe (in the Oneness of God and worship none but Him Alone) and confuse not their Belief with wrong (i.e. by worshipping others besides God), for them (only) there is security and they are the guided ones." - [al-An'aam 6:82]

"Whoever works righteousness - whether male or female - while he (or she) is a true believer verily, to him we will give a good life." - [al-Nahl 16:97]

"And pleasant dwellings in 'Adn (Eden) Paradise; that is indeed the great success." - [al-Saff 61:12]

"But whosoever turns away from My Reminder (i.e. neither believes in this Qur'an nor acts on Us teachings) verily, for him is a life of hardship, and We shall raise him up blind on the Day of Resurrection." - [Ta-Ha 20:124]

"And they say: 'The Most Gracious (Allaah) has begotten a son (or offspring or children) fas the Jews say: 'Uzayr' (Ezra) is the son of God, and the Christians say that He has begotten a son ['Eesa (Jesus)], and the pagan Arabs say that He has begotten daughters (angels and others).

"Indeed you have brought forth (said) a terrible evil thing. Whereby the heavens are almost torn, and the earth is split asunder, and the mountains fall in ruins, Thai they ascribe a son (or offspring or children) to the Most Gracious (God). But it is not suitable for (the Majesty of) the Most Gracious that He should beget a son (or offspring or children). There is none in the heavens and the earth but conies unto the Most Gracious as a slave." - [Maryam 19:88-93]

"And who does more wrong than he who is reminded of the Ayaat (proofs, evidences, verses, lessons, signs, revelations, etc.) of his Lord, then he turns aside there from? Verily, We shall exact retribution from the Mujrimoon (criminals, disbelievers, polytheists, sinners)." - [al-Sajdah 32:22]

"And the Book (one's Record) will be placed (in the right hand for a believer in the Oneness of Allaah, and in the left hand for a disbeliever in the Oneness of Allaah), and you will see the Mujrimoon (criminals, polytheists, sinners), fearful of that which is (recorded) therein. They will say: Woe to us! What sort of Book is this that leaves neither a small thing nor a big thing, but has recorded it with numbers!" - [al-Kahf I8:49]

"(It will be said to the angels): 'Assemble those who did wrong, together with their companions (from the devils) and what they used to worship, Instead of the All-mighty, and lead them on to the way of flaming Fire (Hell)." - [al-Saaffaal 37:22-23]

"The Day when man will see thai (the deeds) which his hands have sent forth, and the disbeliever will sav: Woe to me! Would that I was dust!" - [al-Naba' 78:40]

"And whoever seeks a religion other than Islam, it will never be accepted of him, and in the Hereafter he will be one of the losers." [Aal 'Imraan 3:85] "The losers are those who will lose themselves and their families on the Day of Resurrection." - [al-Zumar 39:15, al-Shoora 42:45]

We hope that anyone who reads this will be guided to follow the truth. May Allaah protect us from all evil.