A video purportedly by Egypt's Islamic State affiliate has delivered a rare direct threat to Israel, saying the Jewish state will soon "pay a high price."

The 35-minute video released on Monday directly threatens Jewish Israelis, saying "your account with us has become weighty and you will soon pay a high price."

The authenticity of the footage could not immediately be verified, though its contents and production style mirrored previous ISIS propaganda material.

"Jews will not remain in Palestine, we will turn it into a graveyard for Jews," Israeli media quoted the video as saying.

Open gallery view An armored Israeli military vehicle drives along Israel's border with the Sinai peninsula in Egypt. January 30, 2014. Credit: Reuters

"Oh Jews, wait for us. The punishment [we've prepared for you] is severe," a translation of the video quotes the narrator as reportedly saying.

"This is only the beginning," said the narrator, according to the Middle East Research Institute's translation, vowing to meet "in Rome and Beit Al-Maqdis" – or Jerusalem.

Egypt's branch of the Islamic State group is spearheading an insurgency in northern Sinai and seldom mentions Israel in its propaganda material.

The latest video, entitled "Flames of the Desert," shows the faces of ISIS fighters killed by Egyptian troops. The military officials say the militant group edited out the fierce counter-attacks launched by the military following militant attacks.

The video refers to Israel as "El Yahud" or the Jews, rather than Israel.

The narrator stresses Israel's military cooperation with Egypt, alongside the U.S.-led coalition's operations against ISIS in Syria and Iraq.

The video highlights a mention of Palestine, and stresses tt has not forgotten that it must be liberated.

The video also emphasizes that ISIS sees itself as indepedent of the Muslim Brotherhood movement and its leaders in Egypt, and charged that the Brotherhood and the United States are two sides of the same coin.

The video also claims that Egypt cannot protect Israel, and that as a result Israel begun "strictly protecting [its border], recruiting agents, and [launching] airstrikes."

The video shows militants riding a tank they purportedly captured from Egyptian army troops, some of them wearing ski masks, camouflage fatigues and armed with machine guns mounted on pickup trucks, mortars and what appeared to be Russian-made, anti-tank Kornet missiles.

Military officials with firsthand knowledge of the fighting in Sinai said the latest ISIS video was a little more than a compilation of old footage depicting attacks on the Egyptian army and police in Sinai. However, the video, which shows roadside bomb attacks, gun battles and sniper fire, offers a glimpse of the scale of fighting there.

It is seen as aimed at providing propaganda to raise morale among ISIS troops in Sinai and to help the group recruit new fighters.