Why is this dangerous? Read Revelation 13:7,8.
"And it was given unto him (antichrist) to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations. And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the lamb slain from the foundation of the world."
The above verse will come to fruition once the religions of the world unite as a global religion.
The Bible says that there will be a terrible and successful attack on Israel. "I will gather all nations to Jerusalem to fight against it; the city will be captured, the houses ransacked, and the women raped. Half the city will go into exile, but the rest of the people will not be taken from the city." (Zechariah 14:2) One only need to know their biblical scripture to know what comes after that.
Psalm 83 lists groups of Arab peoples who border Israel on every side. Psalm 83:2 "Come they say let us destroy them as a nation that the name of Israel be remembered no more." But this nation of ours should heed the warning in verses 13-17 of the Psalm that they will not be successful but will be punished for wanting to destroy Israel. Which side does this country want to be on in a battle between Israel and Arab nations? And if the United States decides not to fight with Israel but let her fight on her own, what will become of this nation?
For those who think that the Bible is only a book of fiction and that predicting the future with its verses is only grabbing at straws, one only need to read verses that have been fulfilled throughout history. The scattering of the Jews written in Deuteronomy 28:64 was fulfilled in AD135 by the Romans. The future persecution of the Jews throughout history was written in Deuteronomy 28:65-67. The regathering of the Jews written about in Deuteronomy 30:1-5 and in the book of Ezekial was fulfilled in 1948.