It seems logical that an expert in a given thing will have at least some knowledge about that given thing.
And yet, you USA, being expert in sin, appear to have no knowledge - at least based on your behavior - as to what sin really is.
Therefore, let's use God's Word, the Bible, to see how it can help.
The Bible defines what sin is in three basic ways:
(1) From James 4:17, if we know to do good and don't do it, it's sin. (Likewise, if we know a thing is wrong but do it anyway, it's sin.)
(2) From 1 John 5:17, all unrighteousness is sin.
(3) From 1 John 3:4, sin in lawlessness (NKJV), or similarly stated in the (KJV), sin is transgression of the Law. What Law ? God's Law, that is, God's Commandments, the same Law specified in James 2:10-11, Romans 7:7, Matthew 5:17-19, and elsewhere in the Bible.
So it's fairly simple. Sin is the breaking of God's Commandments.
Now, if one does not care to know God's Commandments, they will obviously remain ignorant of what sin is, and will almost assuredly be practicing lawlessness; not because they are truly ignorant, but because they are willfully ignorant, knowing that God and Jesus are good, and yet still refusing to know God's Law, even though God ensures that it is available practically anywhere (including here).
So, how will it work out for those who know God and Jesus are good, including those who might even see themselves as "religious" or "spiritual", but who still refuse to know, much less keep, God's readily available Law, and therefore continue practicing lawlessness ?
Let's ask Jesus:
“Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven. Many will say to Me in that day, ‘Lord, Lord, have we not prophesied in Your name, cast out demons in Your name, and done many wonders in Your name?’ And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’" - Matthew 7:21-23
Obviously then, to enter the kingdom of heaven, we must do the will of God in heaven and NOT practice lawlessness.
Jesus is also clear that anyone continuing in willful sin, breaking God's Commandments, no matter what good they might do otherwise, will NOT be going to Heaven.
So USA, the basic problem has nothing to do with any of the good you might do from time-to-time.
The basic problem is with your continuing in the bad, that is, your persistence in willful sin over what is now many years and decades.
But you say, "We know God !"
So what ? Even the devil knows who God is, and believes that God is, in fact, God.
"Even the demons believe—and tremble!" - James 2:19
Merely knowing who God is, and even knowing His Commandments, does nothing in and of itself.
Without repentance, forgiveness of others, and doing God's Commandments, you'll remain lost, and with further destruction to come.
"Do not be deceived, God is not mocked; for whatever a man sows, that he will also reap." - Galatians 6:7
"For not the hearers of the law are just in the sight of God, but the doers of the law will be justified." - Romans 2:13
"But be doers of the word, and not hearers only, deceiving yourselves." - James 1:22
"But why do you call Me ‘Lord, Lord,’ and not do the things which I say?" - Jesus in Luke 6:46
"My mother and My brothers are these who hear the word of God and do it." - Jesus in Luke 8:21
"If you love Me, keep my commandments." - Jesus in John 14:15 (emphasis added to these Verses)
It's sad, USA, that with all your self-declared wisdom, you still refuse to see.
And because you do not Love God and Jesus or Their Word, you also continue in sin.
In fact, instead of a valuable "city on a hill" (or "indispensable" as your leaders proudly self-proclaim), you have become little but sin.
You are not Christian, no matter how many false claims and empty words you use to pretend otherwise.
In fact, you are anti-Christ, due to the sin you have become, through-and-through.
"What sin ?" you ask.
The sin that you no longer recognize, because it now merely seems like "normal", acceptable behavior to you.
As a fish barely notices the water it swims in, and people barely notice the air they breathe, so you do not notice your own sin.
Both within your nation, as well as outside your nation by your humiliating and terrorizing treatment of other nations around the world, you have not Loved God, nor anyone else as yourself; your sinful actions are the proof: unceasing war, violence, murder, hatred, pride, self-righteousness, disrespect, greed, selfishness, thefts, covetousness, lies, deceit, gossip, slander, self-exaltation, lusts, lewdness, adulteries, perversions, destruction of proper family structures, blasphemies, abuse of God's Name, abuse of God's True Sabbath, immaturity and idolatry of every sort including the worship of money, people, culture, and self; and even destruction of the very Earth.
If you, USA, would bother to open your eyes and hear with your ears, you would understand that even the endless OMGs that spew from your people's mouths are a sin, a marginalizing disrespect of God and vain misuse of His name that breaks Commandment #3.
But you do not care, nor see, nor hear.
"For the hearts of this people have grown dull.
Their ears are hard of hearing,
And their eyes they have closed,
Lest they should see with their eyes and hear with their ears,
Lest they should understand with their hearts and turn,
So that I should heal them."
- Jesus in Matthew 13:15, quoting the Prophet Isaiah, regarding the hard-hearted who refuse God's healing Salvation
And so your sins continue, a subset of which is further described here.
But that is not quite all. There is another related matter which needs to be pointed out.
Please know that God is well aware that the attack of 9-11-2001 was a false flag. That is, it was enabled by the US government as an attack against its own people, as a means to declare "forever war" on others around the world whom the US also seeks to murder (breaking Commandment #6), steal from (breaking Commandment #8), and lie about (breaking Commandment #9), due to the USA's greed and covetousness (breaking Commandment #10) in support of the USA war industry and other sinful foreign policy motives.
But according to Jesus, lying murderers are of the devil. As are thieves who do not act openly, seeking to steal, kill, and destroy.
"You are of your father the devil, and the desires of your father you want to do. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he speaks a lie, he speaks from his own resources, for he is a liar and the father of it." - Jesus in John 8:44
"Most assuredly, I say to you, he who does not enter the sheepfold by the door, but climbs up some other way, the same is a thief and a robber. ... The thief does not come except to steal, and to kill, and to destroy." - Jesus in John 10:1 and 10:10
Even so, 9-11 is not all God sees. As of the date this letter is being written, October 10, 2018, God has also warned that you will once again, in the future, perpetrate another false flag attack against your own nation, this time in the form of a cyber-attack that you enable against your own infrastructure. Please understand this: God has also warned that if you do this thing, He will punish the USA severely.
Now, you might not believe God sees.
And others might say, "Well, anyone could guess such a thing."
And while it's true that you, the USA, are in such a sinful state that many, including many of your own, might believe that you would do such a thing, the proof that you indeed will, and that God still sees, will be given by the level of punishment you'll receive afterward.
Then you will know that the One who wants us to cease sin is the One who Loves us, and is also the One whom you should fear.
In Love and Truth,
Born and Raised in the USA