Sometimes they try to forget and to hide because the obligation is not easy, or without risk.
Many Jews however, hold on to this obligation despite all, against all the world has set against them. The Greeks, the Romans, the Christians, the Muslims, and the Nazi's, the Communists and the Modern day Secularists all have had their crack at trying to kill or convert the Jews. They have had some success, but at a terrible price mostly.
Those who don't deny God or the Bible must recognize these promises as binding and that is both upon the Jews and on God because God doesn't do take backs.
God spoke directly to all of the people to establish this bond forever and undeniably in the souls of all Jews and it cries out to them. This is why apostates and unbelievers are not rejected as non-Jews, rejecting a promise is not the same as not being obligated.
I believe that God has put Christianity here on earth for some purpose as well as Islam and all of the other religions. Sometimes you get a glint of what this is about. But, its fleeting.
There is much in the story of Joseph that allows Jews to understand the action of God, misery preparing the way for joy, war laying the foundations for peace, injustice and betrayal providing the opportunities for compassion and opportunity.
If Jews seem to hate all war and conflict, its because they have been asked to dig their own graves so many times, irregardless, of which side they choose. But, this dithering comes at an even greater cost, so choose they must. For many are haunted by the fruits of dithering and not condemning evil and facing it in the horrors of the last Century.
American Jews fear oppression and death, the same as always. In Europe, Christian revivals were accompanied by oppression and death. Its a hard lesson to forget. But, Jews make a greater mistake believing Athiests are better friends or that a Godless state is a better place. For God, will not allow it. For in the vacuum, is not peace but evil.
In my studies most/many christians are unaware of the trials the Jews went thru at so-called christian hands in the middle ages.. In Germany, France, England, Eastern Europe, and other places the same general areas..
Just the same many/most all Jews I know and knew are ignorant that the same exact so-called christians that savaged the Jews murdered other christians in even WORSE ways.. (Fox's Book of Martyrs)..
The same pogroms tortured both Jews and Christians.. at different times in different ways.. Yet most all Jews know only about the actions on Jews during those time(s)..
Not all christians are christians and to be sure not all Jews are Jews.. Who knows the difference?.. A tree is known by its fruit..- Jesus..