The sceptre promise involved not only a dynasty of human kings. It need not have included them at all - had the Israelites retained and been obedient to GOD as their King. Our peoples have basic lessons yet to learn. Actually, God's law is a spiritual law. It involves physical acts - but it is based on spiritual principles.
Correction means a change of course.
Those, and only those, who are bringing on themselves the evils that result from transgression. Now notice again what is laid down in Leviticus 26. What people do not seem to realize is that SIN does bring upon the sinner the consequences of sin - the plagues of suffering. I have said that money is not the source of happiness. Money can buy only material things or services.