Jealous? It's a religion that professes to want to kill all who won't convert, and you wonder why they aren't welcomed with open arms?
Allah is an enemy to unbelievers.- Sura 2:98
Slay them wherever ye find them and drive them out of the places whence they drove you out, for persecution is worse than slaughter.- 2:191
Fight against them until idolatry is no more and Allah's religion reigns supreme.(different translation:) Fight them until there is no persecution and the religion is God's entirely.- Sura 2:193 and 8:39
Those who believe fight in the cause of God, and those who reject faith fight in the cause of evil.- 4:76
O believers, take not Jews and Christians as friends; they are friends of each other. Those of you who make them his friends is one of them. God does not guide an unjust people.- 5:54
Make war on them until idolatry is no more and Allah's religion reigns supreme - 8:39
Allah will humble the unbelievers. Allah and His apostle are free from obligations to idol-worshipers. Proclaim a woeful punishment to the unbelievers.- 9:2-3
Fight those who believe neither in God nor the Last Day, nor what has been forbidden by God and his messenger, nor acknowledge the religion of Truth, even if they are People of the Book, until they pay the tribute and have been humbled.- 9:29
Fight unbelievers who are near to you. 9:123
Allah has cursed the unbelievers and proposed for them a blazing hell.- 33:60
Unbelievers are enemies of Allah and they will roast in hell.- 41:14
When you meet the unbelievers, smite their necks, then when you have made wide slaughter among them, tie fast the bonds, then set them free, either by grace or ransom, until the war lays down its burdens.- 47:4
Muslims are harsh against the unbelievers, merciful to one another.- 48:25
Muhammad is Allah's apostle. Those who follow him are ruthless to the unbelievers but merciful to one another. Through them, Allah seeks to enrage the unbelievers.- 48:29
The unbelievers among the People of the Book and the pagans shall burn forever in the fire of hell. They are the vilest of all creatures.- 98:51