Nahum 1:3 The LORD is slow to anger and of great might, and the LORD will by no means clear the guilty. His way is in whirlwind and storm, and the clouds are the dust of his feet.
Jonah is a great book, hearing about Nineveh, and how God cared for them, and wanted them to know his forgiveness and you might think that after they repented, everything was going to be just fine and it was for a while. The problem is that repentance is not something you just do once would that that would be all it was necessary but since we sin much daily, repentance is not something we do once, but is something we must always be doing.
If it seems that we are always taking about repentance, thats why because it is something that we must always be doing and you know what it says about he who has no sin hr deceives himself and the truth is not in him and thats not only a good saying its Gods Word.
Now Im not saying that because we all sin we should as it were, wallow in the dirt and its not as though we are excused from trying to do what God commands the nobodies perfect, so Im not even going to try to do what is right. Sin should always offend us, it should bother us, it should make us feel guilty and ashamed and it is the very weight of that guilt of sin that should be driving us to repentance, so that we can be cleansed, that our burden might be lifted, that we might be forgiven and that we might live as God created us by the washing of rebirth and the renewal of the Holy Spirit the very children of God for that is who we are.
So how often do the children of God have to repent? Just as often as everyone else, for until we get to heaven, we will be both saints (by the grace of God) and sinners (by the law which we break) both at the same time and so, when some people say there are hypocrites in the church, dont argue agree say to them, why yes, they have come like all sinners come to find the forgiveness of God in our Savior Jesus Christ. Sinners come to church to find forgiveness, thats the whole point and the story we have to tell, is the story of the peace of God, which comes to us in Jesus Christ.
Back to the story so what about Nineveh? They had seen their sins, and the had repented in the days of Jonah but some time had passed, and they had gone back to their old ways, now God is patient, and God is merciful, but there is a limit to all things, and so once again Nineveh is about to be destroyed sadly, this time they do no repent, and this great civilization comes to an end.
But there is a lesson to be learned no one is too big, no one is too important, that God cannot deal with them so, while there is time, repent and receive the great treaure which is ours in Christ.