As soon as a Jew hears of the death of a loved one, they make a tear in their clothing to show their grief. This action is called kriah and it is as a symbol of loss and grief. This also shows what Jacob did to his clothes when he found out that Joseph died
Upon death, the body is washed and prepared for burial. In the days before the funeral, the body is not left alone
In Jewish tradition, burial should happen as soon as possible after death. This does not happen in a synagogue but in a cemetery