Most situations of the peoples and nations in today's world can be found as a result of prophecy in God's Word. This matter of enmity between Islamic clerics and the children of Israel goes back in Old Testament times especially. On Islamic websites their religious clerics even admit the start of it all pointing to back to Old Testament times.
God made a covenant with Abraham and his wife Sarah, and it was to their seed. But Sarah laughed at the idea when this was revealed to them by Christ's visit of Genesis 18 (Jesus was one of the "three men" that met Abraham at his tent door.)
Abraham and Sarah were old, so she laughed at the idea of her having children. Christ kind of rebuked Sarah for laughing, and told them it will... happen.
But what did Sarah do, with still not believing The LORD would accomplish what He promised? She brought her maidservant Hagar in unto Abraham, and Hagar conceived of Abraham, thus Abraham's firstborn son was Hagar's child Ishmael.
However, God did not make His covenant for Abraham and Hagar, but for Abraham and Sarah. Thus Ishmael was not... to be counted as Abraham's 'firstborn'. As it is written, "... in Isaac shall thy seed be called." (Gen.21:12). Isaac was the 'firstborn' son of Abraham and Sarah, and that is who God made His covenant through, and gave HIS Birthright through.
The Islamic cleric is jealous over that, because they only see per the flesh that Ishmael was the literal firstborn son of Abraham, and per God's way the 'flesh' birthright is to go to the firstborn son. (Notice I said 'flesh birthright'.)
The Birthright from God is different than a flesh birthright. How? A flesh birthright from one's flesh father involves inheritance of wares, goods, land, money, material things mostly.
But GOD's BIRTHRIGHT involves especially care of The Gospel of Jesus Christ, on which Abraham believed and God counted it to Abraham as righteousness. And also in God's Birthright is the power to control the gates of one's enemies; plenty of corn and wine, which are also material things, the best lands of the earth's resources (again blessing of the material world), and a seed as many of the stars and sands of the sea. Also included in God's Birthright is the office of an earthly king over His people Israel.
Therefore, GOD's Birthright was given first to Abraham, and then it went to his son Isaac, and then to his son Jacob who's new given name by God would be Israel, and then to his son Joseph, and then to Joseph's two sons Ephraim and Manasseh where the Birthright stops is still supposed to exist even today among those represented by the Gospel of Jesus Christ.
Thus radical Islam is still jealous over God's Birthright going to Isaac instead of Ishmael (Arab peoples). This is still one of the main reasons Islamic clerics teach to hate not only Jews, but also us Christians.
Others of the seed of Ishmael that are not 'radicals' apparently see us more as co-children of God, and not as enemies that stole their birthright from their ancestor Ishmael. Prior to Israel in the middle east becoming a nation again in 1948, most of the Jews, Arabs, and Christians in Jerusalem got along together in the 1800's and early 1900's. The U.N. vote to make Israel a nation again in 1948 apparently set off the present radical elements of Islam against Israel.
