Your Christian Bible rearranged and made translation tweaks to the Tanakh ( Hebrew Bible) but it is obvious reading the five answers that appeared before I went to go compose this answer that they've not actually read even the Christian "Old Testament" let alone the actual Tanakh to think that God would lie that the covenant He called ETERNAL more than a dozen times, would be done away with by an incarnate manifestation of God when God also said in the Torah God does not become a man.!
Answer from someone who has read the Tanakh:
How a Creator of all humans who are all equal before God, who wants us to live in justice, mercy and compassion in a Torah ( law, teaching, eternal covenant) that teaches that all humans can directly know and connect to God and who can merit forgiveness through teshuvah .. repentance and return through amends and striving to righteousness..is somehow, in some alternate reality a vengeful, cruel and unforgiving God..makes no sense.
Contrast that to the New Testament’s antithesis that redefined the nature of God into an incarnate deity ( mangod) who demands blind adherence to a belief system contradictory to the Torah’s promotion of personal accountability and justice and condemns all outside that to eternal torture in an underworld hell ruled by a demon Deity of the underworld. I see it as cruel to abdicate personal accountability and condemn one no matter how righteous, to eternal torture because they don’t worship a man as a god to be the vengeful deity and the one that does not promote justice and mercy.
I'll stick with the belief that those who strive to live righteous in love and brotherhood to our fellow man can all deserve blessing and the Torah's concept that God has always been and shall forever remain directly accessible to everyone.
The Christian bible changes so many things about the Hebrew Bible..the nature of God, the nature of humans, the relationship between God and humanity and the Hebrew Bible does not have the Christian concepts of "original sin"..or salvation.
a Biblical perspective the Torah's concept of forgiveness and repentance (teshuvah)
In the Torah, the process is threefold: 1)confess/acknowledge the wrongdoing 2)one must regret the wrongdoing and do your best to make amends,
lastly, 3) turn away from doing the wrong and not do it again.
This is most often represented using two concepts, nicham (to feel regret or sorrow) and shuv (to return)
`When a man or woman wrongs another in any way and so is unfaithful to the Eternal, that person is guilty and must confess the sin he has committed. He must make full restitution for his wrong, add one fifth to it and give it all to the person he has wronged. [Numbers 5:6-7]
30:8 You will repent and obey God, keeping all His commandments, as I prescribe them to you today.
Ve'atah tashuv veshamata bekol Adonay ve'asita et-kol-mitsvotav asher anochi metsavecha hayom.
Deuteronomy 30:8 note the Hebrew word "tashuv" there
God is omnipotent, thus there is no one who has capacityto "stop" the eternal laws of God. They remain intact and the eternal covenant exists today. The laws of the covenant of Israel were not for anyone other than the covenant nation Israel. There are seven of the 613 commandments that were given to all humanity.
Teshuvah is a way to better ourselves by admitting when we do something wrong to hurt or harm or act in selfishness, to make amends with acts as best we can, ask the one wronged to pardon us and we make a sincere effort to not do the same mistake, then we ask God to forgive us and expect that it will be granted if we do our part.
We are taught through Tanakh that the non -repentant, who lives in denial, selfishness, lack of accountability, abdication of responsibility..and who, despite repeated opportunity even in death, remains non-repentant after punishment..will die. Their soul loses the potential for *immortality* in the reconnection to the Divine.
There is no "Old Testament" for adherents of the Torah, Nevim, and Ketuvim ( Law/teaching, Prophets, and Writings), we have an eternal testament..or covenant.
You're free to your own religion and you're free to consider the God of Abraham, Isaac and Jacob and whom all Israel heard directly and experienced the Divine at Sinai who established the eternal covenant with God..cruel for the laws, very radical in their day for promotion of justice, mercy and that forbade human sacrifice, and that declared all humans were equal before the law and not even kings were above it..in a land and time when kings were gods and whose whims no matter how cruel were the only laws of the land.
I'm also free to consider it illogical and unjust to abdicate personal accountability for reliance upon a one time, one size fits all human sacrifice as a ticket to avoid eternal torture.