When God talks about a nation being revived, he gives a road map to recovery in 2 Chronicles, where he says, "If My people who are called by My name will humble themselves, and pray and seek My face, and turn from their wicked ways, then I will hear from heaven, and will forgive their sin and heal their land" (7:14 NKJV).
In its initial context, these words were given to the nation Israel, but in principle, they apply to any nation, including our own. God was saying, "Before I talk about the problems in the country, I want to talk to my people, the church."
The same is true in the book of Revelation, where, after the first chapter, Jesus spends quite a bit of time talking about what is important to him as far as the church is concerned. Yes, he talks about the future of the world, but first he wants to talk to his church.