This is what real muslim believe, you do not need to understand quran or hadiths, and it doesn’t matter if islam is wrong or wrong, they just have to believe it. here some verses inspiring muslims to kill non muslims:
“[Remember] when your Lord inspired to the angels, “I am with you, so strengthen those who have believed. I will cast terror into the hearts of those who disbelieved, so strike” sura 8 verse 12
” And when the sacred months have passed, then kill the polytheists wherever you find them and capture them and besiege them and sit in wait for them at every place of ambush. But if they should repent, establish prayer, and give zakah, let them [go] on their way. Indeed, Allah is Forgiving and Merciful. ” sura 9 verse 5
“Fight those who do not believe in Allah or in the Last Day and who do not consider unlawful what Allah and His Messenger have made unlawful and who do not adopt the religion of truth from those who were given the Scripture – [fight] until they give the jizyah willingly while they are humbled.” sura 9:29
Here some Hadiths :
Narrated Abu Musa:
A man came to the Prophet (ﷺ) and asked, “A man fights for war booty; another fights for fame and a third fights for showing off; which of them fights in Allah’s Cause?” The Prophet (ﷺ) said, “He who fights that Allah’s Word (i.e. Islam) should be superior, fights in Allah’s Cause.”
Reference | : Sahih al-Bukhari 2810 |
In-book reference | : Book 56, Hadith 26 |
USC-MSA web (English) reference | : Vol. 4, Book 52, Hadith 65 |
Narrated `Abdullah bin Abi `Aufa:
Allah’s Messenger (ﷺ) said, “Know that Paradise is under the shades of swords.”
Reference | : Sahih al-Bukhari 2818 |
In-book reference | : Book 56, Hadith 34 |
USC-MSA web (English) reference | : Vol. 4, Book 52, Hadith 73 |
Narrated `Abdullah bin `Umar:
Allah’s Messenger (ﷺ) said, “You (i.e. Muslims) will fight with the Jews until some of them will hide behind stones. The stones will (betray them) saying, ‘O `Abdullah (i.e. slave of Allah)! There is a Jew hiding behind me; so kill him.'”
Reference | : Sahih al-Bukhari 2925 |
In-book reference | : Book 56, Hadith 138 |
USC-MSA web (English) reference | : Vol. 4, Book 52, Hadith 176 |
And they are many verses in the quran and hadiths encourage muslims to kill non believers.
Rev | 9 | 11 | And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon.