Because if there is no direct message from your god stating that those type of events are to cease they are still in effect.
Angels beheading people? Since there is no record of this happening after the Battle of Badr why would God need to say this? As for jihad in general. I already told you what "my" God has to say about this. But let me repeat it since you clearly weren't paying attention:
"The unbelievers and the faithless have set their minds on four things: first, the shedding of blood; second, the burning of books; third, the shunning of the followers of other religions; fourth, the extermination of other communities and groups.
Now however, through the strengthening grace and potency of the Word of God these four barriers have been demolished, these clear injunctions have been obliterated from the Tablet and brutal dispositions have been transmuted into spiritual attributes. Exalted is His purpose; glorified is His power; magnified is His dominion!"
http://reference.bahai.org/en/t/b/TB/tb-8.html
I'd say that is pretty direct.
Where does Mohamed, or Allah state non-believers; Jews, Christian, and others are to be left in peace? If there is no set separation between then and now the the entire Koran is still in play.
Did I ever say there was no separation between then and now? I don't think so! But here is where the Qur'an say let People of the Book [Jews and Christians] in peace:
Dispute not with the People of the Book save in the fairer manner, except for those of them that do wrong; and say, 'We believe in what has been sent down to us, and what has been sent down to you; our God and your God is One, and to Him we have surrendered.'
[Al-Qur’an 29:46]
But I think I already cited that passage and once again, you ignored it.
The Qur'an even has passages which affirm their salvation. This one is repeated twice in the Qur'an so He must have really meant it!
002.062
"Indeed, those who
believe, and those who are
Jews, and the Christians and the Sabians, any who believe in God and the Last Day, and work righteousness, shall have their reward with their Lord; on them shall be no fear, nor shall they grieve."
005.069
"Indeed, those who
believe, and those who are
Jews, and the Sabians and the Christians, any who believe in God and the Last Day, and work righteousness,- on them shall be no fear, nor shall they grieve."
005.082-83
nearest among them in love to the believers you will find those who say, "We are Christians":
because amongst these are men devoted to learning and men who have renounced the world, and they are not arrogant.And when they listen to the revelation received by the Messenger, you will see their eyes overflowing with tears, for they recognise the truth: they pray: "Our Lord! we believe; write us down among the witnesses."
007.159
"Of the people of Moses there is a section who guide and do justice in the light of truth."
003:113-114
"Of the People of the Book are a portion that stand: They rehearse the verses of God all night long, and they prostrate themselves in adoration. They believe in God and the Last Day; they enjoin what is right, and forbid what is wrong; and they hasten in good deeds: They are in the ranks of the righteous"
The Qur'an also says that any disputes should between Muslims and them should be left to the Day of Judgement:
022.067-69
"To every People have We appointed rites and ceremonies which they must follow: let them not then dispute with thee on the matter, but do invite (them) to thy Lord: for you are assuredly on the right way. If they do wrangle with you, say, "God knows best what it is you are doing. God will judge between you on the Day of Judgment concerning the matters in which you differ."
005.005
This day are (all) good things made lawful for you. The food of those who have received the Bible is lawful for you, and your food is lawful for them. And so are the virtuous women of the believers and the virtuous women of those who received the Bible before you (lawful for you) when ye give them their marriage portions and live with them in honour, not in fornication, nor taking them as secret concubines. Who denies the faith, his work is vain and he will be among the losers in the Hereafter.
010.041
"If they charge you with falsehood, say: "My work to me, and yours to you! ye are free from responsibility for what I do, and I for what you do!""