Its not a crap as bible says in exodus and leveticus that animal sacrifices and other offerings in the temple are forever.That is before jesus animal sacrifice pointed to the coming sacrifice of messiah for mankind.After jesus we do it in rememberance of his eternal sacrifice for all mankind.Also in leveticus 23 we are asked to observe sabbath and high sabbath days(7eternal festivals) forever.Also note that its not the modern jewish calendar but the biblical calendar of 360 days.For more info-visit godschurch.blogspot.com and 360calendar.com.Under a one world religion mankind will have not only spiritual but allround development.That age will be called-the golden age and will last till coming of christ.But first we have to traverse WW3.