Can you please explain these quotes and the following questions?

H. L. A . Hart (Pq# 94-104) Lewellyn * " what officials do about disputes is .. . the law itself" * " The prophecies of what the courts will do .. . are what I-mean by the law " - O.W. Holmes 4 "Statutes are' sources of Law ... not parts of the law itself - J.C . Gray * " Constitutional law is positive morality merely" Austin * " One shall not steal; if somebody steals he shall be punished If at all existent, the first norm is contained in the second norm which is the only genuine norm.. . Law is the primary norm which stipulate the sanction" kelsen.How does law differ from and how is it related to orders back by threats? How does legal obligations differ from and how is it related to moral obligation? what are rules and to what extent is law an affair to rule? what is the different between Law and rule? what is Convergent behavior? what causes or why something becomes a rule