'Rules' in the Bible

If those who have not circumcision keep the rules of the law, will it not be credited to them as circumcision?

because we know that Christ, having been raised from the dead, will not die again. Death no longer rules over Him.

Are ye ignorant, brethren, (for I speak to those knowing law,) that law rules over a man as long as he lives?

See then that God is good but his rules are fixed: to those who were put away he was hard, but to you he has been good, on the condition that you keep in his mercy; if not, you will be cut off as they were.

or he who exhorts, to his exhorting: he who gives, let him do it with liberality; he who rules, with diligence; he who shows mercy, with cheerfulness.