Homer you wrote:And yes, God has commanded one thing and "set a different standard tomorrow", namely Sabbath observance. Regarding relations with our fellow man, an "eye for an eye" was once the standard, while under Messiah's reign revenge is forbidden.
Giving instructions and setting moral standards are quite different things.
The Sabbath instruction was not given to Abraham, Isaac, or Jacob. Never given before Moses. As for the "eye for an eye" command, that was not a standard of morality, but a tempering of the inclination of the Hebrews to take revenge by doing even more than was done to themselves, that is "two eyes for an eye". But Jesus instructed his followers as to what was the real heart of God in the matter ---- non-resistance.
It is interesting that Jesus didn't indicate that the "eye for an eye" command was even that of the Father's. He said:
Matthew 5:38 "You have heard that it was said, ‘An eye for an eye and a tooth for a tooth.’
It seems to me that there is a wide variety of opinions as to what sin actually is. Some limit sin to sexual immorality. Others limit it to activities such as smoking, drinking, attending R-rated movies, or gambling. Some are blind to the sins by which we wound other people.
Some think that it is impossible for a Christian to go for a single day, or even an hour without sinning. One the other hand, I encountered one woman who claimed she had never sinned for more than 40 years.
As a young person, I had some problems with anger. I was helped by keeping in mind the verse which states "The anger of man does not work the righteousness of God". Yet, anger per se cannot be sin, for God gets angry ---- and we also have the verse, "Be angry and sin not."
There are a number of different Greek words which have been translated as "sin", and they do not all have the same meaning. Here are the 8 which I have discovered in the New Testament. The Greek word is in red, and a literal translation in blue.
1. paraptōma FALLING ASIDE, a false step, a blunder. This seems to be an unintentional act. This is hardly worthy of being called a "sin". Yet some people will hold your blunders against you. Jesus said that if you do not forgive others their blunders, neither will you Father forgive you.
2. agnoāma NO KNOWLEDGE . Even under human law, it is said, "Ignorance of the law is no excuse". Yet, one who has no knowledge of the right thing to do, does not seem as culpable as one who does. Jesus said in his parable that the servant who did things worthy of a beating, but did not know his master's will would receive a light beating, whereas the one who did the same things, but did know his masters will, would receive a heavy beating.
3. hamartia MISSING THE MARK. This was the original meaning, where one aims at righteousness but fails. But its later meaning included wrongdoing of all kinds.
4. parabasis STEPPING BEYOND, transgression This seems to be a case of knowing the law of God, but deliberately going beyond the limits of that law. It seems to me that this one would correspond to that servant who "knew his master's will but still did things worthy of a beating."
5. anomia LAWLESSNESS
The lawless person seems to be a state of constant sin. There are people who criticize those who believe in following Jesus' teaching in the Sermon on the Mount as "legalists", believing we are "depending on works" for our salvation.
6. paranomia BEYOND THE LAW
Those who practise paranomia think that they are "above the law", that the law does not apply to them because they themselves are so wise that it is unnecessary for them to obey the law. It may be necessary for others, but they can do the right thing without being "legalists".
7. asebia NO REVERENCE
Having no reverence for God and His servants, using Jesus' name in a foul way, blaspheming God, and mocking the things of God, are practices which give a disciple of Christ a sick feeling inside. A disciple is greatly repulsed by such acts. Yet, many who engage in these practices as a way of life, have repented and become dedicated disciples.
8. parakoā BEYOND HEARING Unwillingness to listen. This is a most serious condition. If people refuse to listen to the truth proclaimed by any of God's servants, there is no hope for them as long as they continue to do so.
If any one is interested in a partial list of scriptures which use these different words, I could post it.