Why you should learn Islam from Muslims only

فَإِذَا لَقِيتُمُ الَّذِينَ كَفَرُوا فَضَرْبَ الرِّقَابِ حَتَّىٰ إِذَا أَثْخَنتُمُوهُمْ فَشُدُّوا الْوَثَاقَ فَإِمَّا مَنًّا بَعْدُ وَإِمَّا فِدَاءً حَتَّىٰ تَضَعَ الْحَرْبُ أَوْزَارَهَا ۚ ذَ‌ٰلِكَ وَلَوْ يَشَاءُ اللَّهُ لَانتَصَرَ مِنْهُمْ وَلَـٰكِن لِّيَبْلُوَ بَعْضَكُم بِبَعْضٍ ۗ وَالَّذِينَ قُتِلُوا فِي سَبِيلِ اللَّهِ فَلَن يُضِلَّ أَعْمَالَهُمْ

(سورة محمد, Muhammad, Chapter #47, Verse #4)

3    This because those who reject Allah follow vanities, while those who believe follow the Truth from their Lord: Thus does Allah set forth for men their lessons by similitudes.

4    Therefore, when ye meet the Unbelievers (in fight), smite at their necks; At length, when ye have thoroughly subdued them, bind a bond firmly (on them): thereafter (is the time for) either generosity or ransom: Until the war lays down its burdens. Thus (are ye commanded): but if it had been Allah’s Will, He could certainly have exacted retribution from them (Himself); but (He lets you fight) in order to test you, some with others. But those who are slain in the Way of Allah,- He will never let their deeds be lost.

5    Soon will He guide them and improve their condition,

6    And admit them to the Garden which He has announced for them.

7    O ye who believe! If ye will aid (the cause of) Allah, He will aid you, and plant your feet firmly.

8    But those who reject (Allah),- for them is destruction, and (Allah) will render their deeds astray (from their mark).

9    That is because they hate the Revelation of Allah; so He has made their deeds fruitless.

10    Do they not travel through the earth, and see what was the End of those before them (who did evil)? Allah brought utter destruction on them, and similar (fates await) those who reject Allah.

11    That is because Allah is the Protector of those who believe, but those who reject Allah have no protector.

12    Verily Allah will admit those who believe and do righteous deeds, to Gardens beneath which rivers flow; while those who reject Allah will enjoy (this world) and eat as cattle eat; and the Fire will be their abode.

13    And how many cities, with more power than thy city which has driven thee out, have We destroyed (for their sins)? and there was none to aid them.

14    Is then one who is on a clear (Path) from his Lord, no better than one to whom the evil of his conduct seems pleasing, and such as follow their own lusts?

15    (Here is) a Parable of the Garden which the righteous are promised: in it are rivers of water incorruptible; rivers of milk of which the taste never changes; rivers of wine, a joy to those who drink; and rivers of honey pure and clear. In it there are for them all kinds of fruits; and Grace from their Lord. (Can those in such Bliss) be compared to such as shall dwell for ever in the Fire, and be given, to drink, boiling water, so that it cuts up their bowels (to pieces)?