Muslims/Christens are cousins and they do not like each other,to have the peace should they go for Jews line?

when every body knows that muslims and christiens are brothers but unfortunatly they do not like each other because of their beliefs or religions.even they do not recmend each other,s prophets.so don,t you think if they go back and follow their forefather,s religion JEWS.they can achieve peace.all the world is now become the bettle ground because of these two cousins.brothers.your respectful answers please.because peace is must on earth otherwise there will be no more religions and no more believers.thanks.