Knowing the prayer book, even if they are complete secularists, is important for Israelis for the same reason, because it allows any Jew to enter any synagogue any place on the planet and immediately fit in and share a common heritage.
And the denial of that common heritage is what now threatens to bring about a national
calamity of colossal proportions.
And so, yes indeed, I stand by my assertion fully. Nearly 1000 Israelis have been murdered by Oslo, and the country is now in unprecedented danger, because Israelis do not know the prayer book and the Bible.