Controversial cleric Abu Hamza al-Masri preached that killing non-Muslims was justified even for no reason, the jury at the Old Bailey has heard.
Mr Abu Hamza urged followers to take up the sword, the court heard
The court was played a videotape of a sermon Mr Abu Hamza gave in 1999.
"Killing a Kafir [infidel] for any reason you can say it is OK even if there is no reason for it," he was recorded as saying.
The 47-year-old, from west London, denies 15 charges, including soliciting murder and inciting racial hatred.
'Help of sword'
A video of Mr Abu Hamza's talk given in September 1999 called "Adherence to Islam in the Western World" was played to jurors on the third day of his trial.
In it he says: "Killing an adulterer, even if he is a Muslim is OK. Killing a Kafir who is fighting you is OK."
He argues that Islamic beliefs should be spread with the help of the sword.
"Dawa propagation of Islam [through word and action] needs a sword next to it and also needs effort."
He says those selling alcohol should be persuaded to come to the mosque.
"Make sure that the person who gave him the licence for that wine shop doesn't exist anymore on the Earth. Finish him up. Give him Dawa.
"If he doesn't respect Dawa, kill him.
"You have to understand that Dawa is good but it doesn't survive alone.
"There is many prophets before Muhammad ... they were killed because they did not have the sword with them."
He also made claims that non-Muslim people coming to the UK as political refugees could kill or steal while a Muslim seeking sanctuary on religious grounds could not.
'Crawling on hands'
Another talk he gave, in Arabic, was also read to the court.
In it he verbally attacks Jews and criticises the late former foreign secretary Robin Cook for "crawling on his hands and knees to the Middle East to mediate".
"They all know their roles as they are slaves of the Jews," he says.
"They hate the Jews more than we do. But the Jews own them. They own everything they have and they own their fantasies as well and they have a file on each one of them that could embarrass them in front of the people if he does not follow what he tells them."
Mr Abu Hamza faces nine charges under the Offences Against the Person Act 1861 alleging that he solicited others at public meetings to murder Jews and other non-Muslims.
He also faces four charges under the Public Order Act 1986 of "using threatening, abusive or insulting words or behaviour with the intention of stirring up racial hatred".
A further charge alleges he was in possession of video and audio recordings, which he intended to distribute to stir up racial hatred.
The final charge, under section 58 of the Terrorism Act, accuses him of possession of a document, the Encyclopaedia of the Afghani Jihad, which contained information "of a kind likely to be useful to a person committing or preparing an act of terrorism".