"Part of the function of a religion in a society is to lay down the rules for how that society should live. It provides a code of ethics and behaviour. These particular rules, which have been illustrated in such detail here, pertain to a particular group of people from the ancient past."

The 7 Noahide Laws were given by G-d to Noah for all humans to follow. The 613 commanments in the Old Testament(which also include the laws set down in the 7 Noahide Laws) were given for Jews to observe.Whether those in other religions should observe some of the 613 commandments not included in the 7 Noahide laws is something for each sect to decide.