iv.138: those who believe, then disbelieve, then again believe, then disbelieve and then increase in disbelief, allah will never forgive them nor will he guide them to the right way.
iv.89: they desire that you should disbelieve as they have disbelieved, so that you might be (all) alike; therefore take not from among them friends until they fly (their homes) in allah's way; but if they turn back, then seize them and kill them wherever you find them, and take not from among them a friend or a helper.
iv.92: and it does not behoove a believer to kill a believer except by mistake, and whoever kills a believer by mistake, he should free a believing slave , and blood-money should be paid to his people unless they remit it as alms; but if he be from a tribe hostile to you and he is a believer, the freeing of a believing slave (suffices), and if he is from a tribe between whom and you there is a covenant, the blood-money should be paid to his people along with the freeing of a believing slave; but he who cannot find (a slave) should fast for two months successively: a penance from allah, and allah is knowing, wise.
the roman numerals are the suras of the koran, function like the books of the bible. the chapters (suras) follows.
you can verify this text and read more by going to a koran website, such as this one at the university of virginia.
xvi.8: it may be that your lord will have mercy on you, and if you (again return to disobedience) we too will return (to punishment), and we have made hell a prison for the unbelievers.
ii.161: surely those who disbelieve and die while they are disbelievers, these it is on whom is the curse of allah and the angels and men all;
ix. 5-6: kill those who join other gods with god wherever you may find them.
iv.76: those who believe fight in the cause of god.
iv.74: let those who fight in the cause of god who barter the life of this world for that which is to come; for whoever fights on god's path, whether he is killed or triumphs, we will give him a handsome reward.
viii.39-42: say to the infidels: if they desist from their unbelief, what is now past shall be forgiven; but if they return to it, they have already before them the doom of the ancients! fight then against them till strife be at an end, and the religion be all of it god's.
"there may be moderate muslims, but islam itself is not moderate. there is no difference between islam and islamic fundamentalism. at most there is a difference of degree but not of kind."
-- ibn warraq, executive director of the institute for the secularization of islamic society
for the complete statement, please see www.secularhumanism.org/wtc.htm