Finally, there is a fifth reason tens of millions of Americans, many conservative commentators, support Israel and worry about America if American support for Israel wanes.
To the left in America and around the world, this reason is dangerous nonsense. But for a vast number of America's Christians, many Jews and even many non-religious conservatives, it is deeper than any military or political reason. The reason is based on a verse in Genesis in which God, referring to the Jewish people, says to Abraham: "I will bless those who bless you and curse those who curse you."
One need not be a Jew or Christian or even believe in God to appreciate that this verse is as accurate a prediction of the future as humanity has ever been given by the ancient world. The Jewish people have suffered longer and more horribly than any other living people. But they are still around. Their historic enemies are all gone. Those who cursed the Jews were indeed cursed.
And those who blessed the Jews were indeed blessed. The most blessed country for more than 200 years has been the United States. It has also been the most blessed place Jews have ever lived in. Is this a coincidence? Many of us think not.
Those who curse the Jews today seem to be cursed. The most benighted civilization today is the Arab world. One could make a plausible case that the Arab world's preoccupation with Jew-hatred and destroying Israel is decisive in keeping the Arab world from progressing. The day the Arab world makes peace with the existence of the tiny Jewish state in its midst, the Arab world will begin its ascent.
The converse is what worries tens of millions of Americans: The day America begins to abandon Israel, America will begin its descent.
Israel shares America's values, such as liberty, an independent judiciary, a free press, freedom of religion, free speech and women's equality. The Arab and Muslim worlds have none of these. Those facts -- and America's Judeo-Christian roots -- make support of Israel, no matter what the Arab and Muslim "street" feels about America, a moral lynchpin of American foreign policy.
This administration's desire to have America liked in the Arab and Muslim worlds therefore has to mean altering that lynchpin. You cannot protect Israel and strive to be liked in the Arab and Muslim worlds at the same time. And you cannot weaken that protection without weakening America's moral values, which form the basis of America's greatness.
Even aside from compromising America's moral essence, weakening American support of Israel will only strengthen the America-hating Islamists. The notion that the primitive monsters of the Taliban, Hamas, al-Qaida and the like will become pro-American -- or just stop attacking America -- if America weakens its support of Israel betrays an ignorance of evil that is frightening.
So there is nothing to gain -- and America's soul to lose -- by weakening, or by even seeming to weaken, American support for Israel.
In 1968, Eric Hoffer, the longshoreman turned philosopher and author of the classic work "The True Believer," wrote in The Los Angeles Times:
"The Jews are alone in the world. If Israel survives, it will be solely because of Jewish efforts. And Jewish resources. Yet at this moment Israel is our only reliable and unconditional ally. We can rely more on Israel than Israel can rely on us."
Hoffer concluded: "I have a premonition that will not leave me; as it goes with Israel so will it go with all of us. Should Israel perish, the holocaust will be upon us."
Genesis was right.