What is the word for the definition article "the" in the original Hebrew and Greek?
"The" is the only definitive article in the english language.
:o I dont have an answer to why this word does not have a Hebrew or Greek definiton found in the scpritures.
Scholars who transliterated from the original text to english may have conveyed why.
From the way our english language is formed, the presence or absence of "the" in a statement does have a targeted understanding.
It is without question to a Jew, "The law" is a body of commandments given through Moses.
"Law" speak of rules and declarations to govern a people, nature, teritory, etc. Not all law is from God, but "the law" is understood as from God.
Jesus is David's seed and David is Abraham's seed! And WE are Abraham's seed as well!
So you agree there were several different covenants in the OT?
Yes, Whenever God spoke prophetically to man in a certain generation and made a covenant, God's words are irreversable.
Amen, God has NEVER broken His covenants.

We're in agreement on something
You just quoted scripture that SAYS they had to keep the commandments and the statutes yet you say they didn't have to? Punishment is punishment.
Lilke I said, The covenant with David had no conditions for David's seed to keep in order to obtain God's promise to David.
Yes, this Psalm does show that this same seed were also under another covenant, called the Mosaic Covenant which had blessing and curses that doomed those that broke "the law. "
All the covenants have words we can research in order to read what both sides are obligated to do and especially when that covenant will be fulfilled or not.
The Davidic covenant was fulfilled when Jesus ascended.
Act 2:25-36
The Mosaic covenant which had laws that condemn all men to death for sins, this covenant was fulfilled when Jesus resurrected from the dead for sins of the world. (Some people call the law love, but text calls it a ministration of death, ministration of condemnation, whose glory is faded away in light of the new covenant)2Cr 3:7-16
David's covenant included the commandments and statutes....surprisingly, most covenants DO!
Most covenant do not....prove it.
Show text that the Covenant with Noah contained the Law and commandments?
Text proves, that
if the Abrahamic covenant was dependent on the law which came into being 430years after God's promise to Abraham, then the promise was a scam.(void)
Gal 3:17And this I say, [that] the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect.
The New Covenant does not include "the law", given the COI, but rather God's law that cause us to know His will for each of our lives.
CRIB