Ok let's talk about the fruits of revival. Efficacious grace amounts to effortless obedience, for those parts of the heart sanctified. In a major revival, it's possible for "labor" to become a typically unrealizable concept. Jesus put it like this:
"Come to me, all you who are weary and burdened, and I will give you
rest. 29Take my yoke upon you and learn from me, for I am gentle and humble in heart, and you will find
rest for your souls.
30For my yoke is
easy and my burden is light.”
What is rest like? It's like this. When's the last time you woke up from a good night's sleep complaining, "Good Lord, that rest was a
ton of work!"
Isaiah used different language to express the same thing:
"They that wait upon the LORD shall renew their strength; they shall mount up with wings as eagles; they shall run,
and not be weary; they shall walk, and not faint."
Which explains why the God of the OT often "seemed" more harsh than the God of the NT. The Mosaic era was, like Pentecost, a period of great revival. Since obedience was therefore easy in that period, Yahweh was very intolerant of disobedience. In point of fact the NT God is equally harsh, for example He was putting the Corinthians to death for profaning the Eucharist (11:30), hence Paul reminded them it was all just like Mosaic times - see 10:5-11.
In addition to making life typically effortless, a major revival elevates people to levels of joy/intoxication beyond their wildest dreams/imaginations. Thus it is possible for a revival to eliminate alcohol abuse and drug trafficking, in a given town or city, virtually overnight, as the populace, by and large, will no longer crave those things. Crime rates in general can diminish to near zero because, when life is effortless, and people feel happy and secure in Christ, they don't feel much need to engage in crime. The streets become safe to meander even at night.
Even more importantly, a major revival is an outpouring targeted, not just to believers, but to unbelievers as well, to draw them into the kingdom. Thus waiting upon the Lord for revival is our most powerful evangelistic strategy - in fact the ONLY strategy that Yahweh ordained, in my opinion.