Thank you sir for your answer. I was hoping to tackle many of the points you brought up because they are significant.
The two questions I asked are related because they both deal with whether the New Testament Scriptures complement or oppose the Old Testament Scriptures.
You wrote "I believe that Jesus lived a higher standard than that was possible by any old testament person. He preached what he lived (Acts 1:1)."
Obviously Jesus was sinless and perfect- and no other person under the Old nor New Covenant ever was besides. We're dealing with whether the Law that Christ lived and taught was a higher law morally than what had been revealed in the Old Testament. The words you wrote afterwards show that you know this is the issue, but I'm just clarifying that for the others who read this thread.
You wrote "The very proof that Jesus preached something higher is the way he presented the sermon on the mount.
Matt 5:20 -'For I say to you that unless your righteousness surpasses that of the scribes and Pharisees, you will not enter the kingdom of heaven.' The scribes and Pharisees were those who kept the law outwardly. Jesus called them white washed tomb. Because they were good outside but dead inside. Jesus said under New Covenant our righteousness should surpass that of scribes and Pharaisees, this is because New testament standard is not external purity but internal. That is why JEsus said, clean the inside of the cup first and the outside will be clean by itself."
You seem to be saying that hypocrisy and being a white-washed tomb was acceptable under the Old Covenant. Was it okay for the Scribes and Pharisees to only look righteous externally but not be righteous internally until Jesus preached the Sermon on the Mount? How would the need for our righteousness to surpass that of the Scribes and Pharisees be a requirement to follow a higher law unless it were replacing the law already in place- a law which permitted hypocrisy and had no internal requirements? Were the Scribes and Pharisees righteous men up until Jesus preached the Sermon on the mount???
You wrote "9 Out of the 10 commandments are external. Only thou shall not covert was internal. Paul accepted that this one law he could not keep under old covenant. God kept this one internal law to keep them humble. But in New Covenant, everything is inner, it is inner cleansing."
All of God's commandments have always had an internal requirement which was expressed externally when met from the heart. Look at the spirituality seen in the Law of Moses:
Leviticus 19:17-18 " 17 Thou shalt not hate thy brother in thine heart: thou shalt in any wise rebuke thy neighbour, and not suffer sin upon him. 18 Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbour as thyself: I am the Lord."
This is what Jesus also taught on the Sermon on the Mount and He couldn't improve upon the perfect law which He had already given through Moses. And Paul never said that thou shalt not covet was the one law you could not keep under the Old Covenant. Look at what the Holy Spirit says about Zachariah and Elisabeth serving God under the Old Covenant:
Luke 1:5-6 "5 There was in the days of Herod, the king of Judaea, a certain priest named Zacharias, of the course of Abia: and his wife was of the daughters of Aaron, and her name was Elisabeth. 6 And they were both righteous before God, walking in all the commandments and ordinances of the Lord blameless."
You wrote: "But in New Covenant, everything is inner, it is inner cleansing. 5:21 "You have heard that [k]the ancients were told, ‘You shall not commit murder’ and ‘Whoever commits murder shall be [l]liable to the court.’ 22 But I say to you that everyone who is angry with his brother shall be [m]guilty before the court. If we ask a Child to read this above verse and ask what is Jesus trying to say, the child will plainly say that Jesus is telling something different from what the people were told under the law. The phrase "BUT I Say to you", is very clear that Jesus taught something different. Something higher. Something that purifies a man inside. Example Murder (external sin) vs Anger (inner sin); Adultery vs Lust in heart. In old testament the standard was jumping 10 feet then Jesus raised the bar to 100 feet. The one who jumps 100 feet automatically jumps 10 feet, that is why we do not need to keep external laws. If we are internally pure then we already cross 100 feet."
The child would say that if he didn't know what the Law actually said as opposed to the corrupt interpretations of the Law that were prevalent in Jesus' day. Jesus never corrected nor improved upon the OT Scriptures since they were His own Law. Every commandment, whether it is Old or New Testament, challenges the heart and requires external conformity. I quoted Leviticus 19:17-18 above to show that the Law of Moses did deal with the heart and Paul himself said in Romans chapter 7 that "the law is spiritual" There are also external commandments in the New Testament (not brand new commandments, but echoes and re-phrasings of the morality of the Old Testament). Obviously God expects a heart in line with what He commands and the corresponding external practice.
1 Timothy 2:9-15 "9 In like manner also, that women adorn themselves in modest apparel, with shamefacedness and sobriety; not with broided hair, or gold, or pearls, or costly array; 10 But (which becometh women professing godliness) with good works. 11 Let the woman learn in silence with all subjection. 12 But I suffer not a woman to teach, nor to usurp authority over the man, but to be in silence. 13 For Adam was first formed, then Eve. 14 And Adam was not deceived, but the woman being deceived was in the transgression. 15 Notwithstanding she shall be saved in childbearing, if they continue in faith and charity and holiness with sobriety."
You wrote: "Jesus said the greatest man who ever lived under old covenant was John the Baptist. But the least in the New Covenant will be greater than this greatest man, because of the higher standard of New Covenant life (Matt 11:11).
Jesus did not say the reason the least in the kingdom of heaven was greater was the higher standard of life. Consider what a poor forerunner John the Baptist would have been to Christ if he had been calling people back to a law that Christ was about to improve upon and change.
You wrote "Even under Old Covenant, God's desire for a man is to be pure internally as well, but it was impossible to be achieved unless the Holy Spirit could live inside them. Now we have the Holy Spirit living inside us under New Covenant. That is why it is possible to be cleansed inside out."
You had said before that 9 of the 10 commandments were external and now you say something which implies they went deeper. But yes, God did indeed desire internal purity under the Old Covenant (and before that all the way back to the beginning). The godly people who inherited salvation before Christ were pure internally since they understood the spiritual nature of God's Law and walked in it in a manner that God was pleased with and commended.
Look at Job: Job 1:1- "There was a man in the land of Uz, whose name was Job; and that man was perfect and upright, and one that feared God, and eschewed evil." Job 31:1-3- "I made a covenant with mine eyes; why then should I think upon a maid? 2 For what portion of God is there from above? and what inheritance of the Almighty from on high? 3 Is not destruction to the wicked? and a strange punishment to the workers of iniquity?"
Every righteous person to ever live had the heart expressed here in Psalm 119:1-8 since God's law is eternal and also spiritual: "Blessed are the undefiled in the way, who walk in the law of the Lord. 2 Blessed are they that keep his testimonies, and that seek him with the whole heart. 3 They also do no iniquity: they walk in his ways. 4 Thou hast commanded us to keep thy precepts diligently. 5 O that my ways were directed to keep thy statutes! 6 Then shall I not be ashamed, when I have respect unto all thy commandments. 7 I will praise thee with uprightness of heart, when I shall have learned thy righteous judgments. 8 I will keep thy statutes: O forsake me not utterly."
The righteous people before Christ had the Holy Spirit with them in some way to some measure which enabled them to keep His law acceptably as they sought Him and cooperated with Him by following the Truth they knew with an obedient faith. Remember how in Psalm 51 David prayed for God not to take his Holy Spirit from him as he repented and sought forgiveness and cleansing? (Psalm 51:11)
You wrote: "In either way New Covenant is far more higher standard than Old."
There is a major difference between a better covenant and a higher law standard of law. The New Covenant allows the faithful to be nearer to the Lord and indwelt by His Spirit to a depth and degree which enables an even better quality, more pure fulfillment of the same moral law which existed from the beginning.
Romans 8:4 "4 That the righteousness of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit."
Thank you for being willing to reason.