WTF does all of that have to do with the faith of Israel? You're saying the Hebrew Bible is outdated? The Muslims feel the same way about your NT (So what, right? Do you care?). According to them, the "new revelation" is Islam through the prophet Muhammad.
If your supposed "NT" or religion contradicts what is explicitly stated in the Hebrew Bible (the "OT"), then I'll go with the original revelation and you can follow the upstart, "NT", religion. Not me, I won't go with Christianity, Islam, Bahai, Hinduism, Hare Krishna, Buddhism..none of them. You can go if you insist, but for me and my house, we will serve and worship YHWH, The God of Abraham, Isaac, and Jacob. I don't want your strange gods or "new" anything.
Jeremiah 6:16: "Thus says YHWH: Stand by the roads, and look, and ask for the ancient paths, where the good way is; and walk in it, and find rest for your souls. But they said, 'We will not walk in it.'"
I will remain on the ancient path.
In the Hebrew Bible, YHWH is the Heavenly Father, period. One Being, One Person, One Deity. One, not three. There's no God by Commitee. There is One Almighty God and His Name is YHWH, our heavenly Father.
YHWH doesn't need to kill the innocent to forgive anyone, much less kill himself (or 1/3rd of himself). You can't kill God for your sins (that's the worst type of blasphemy and idolatry). YHWH won't die, Haleluyah YAHWEH, The Eternal, Immortal One! They want to kill you for their sins, but Praise Your Holy Name, YOU WON'T DIE!
There's no life in death. If you wish to transcend the grave, you need to repent of your sins and keep YHWH's commandments. Live righteously. There are no shortcuts or cheat codes, that's the only way. Repentance and living righteously by keeping YHWH's commandments.
Psalm 37:28: "For YHWH loves justice; He will not forsake His tzadikim (righteous ones, צדיקים). They are preserved forever, but the children of the wicked shall be cut off."
Psalm 112:6: "Surely the righteous (Tzadik, צדיק) will never be shaken; they will be remembered forever."
Psalm 116:15: "Precious in the sight of YHWH is the death of His tzadikim (righteous ones, צדיקים)."
Proverbs 10:7: "The memory of the righteous (Tzadik, צדיק) is a blessing, but the name of the wicked will rot."
Proverbs 12:7: "The wicked are overthrown and are no more, but the house of the righteous (Tzadikim, צדיקים) will stand."
Isaiah 57:1-2: "The righteous perish (Tzadik, צדיק), and no one takes it to heart; the devout are taken away, and no one understands that the righteous are taken away to be spared from evil. Those who walk uprightly enter into peace; they find rest as they lie in death."
WHY DO THE RIGHTEOUS DIE PEACEFULLY? THEY TRUST YHWH:
Isaiah 56:4-5: "For thus says YHWH: To the eunuchs who keep My Sabbaths, who choose the things that please Me and hold fast My covenant, I will give in My house and within My walls a monument and a name better than sons and daughters; I will give them an everlasting name that shall not be cut off."
Daniel 12:2-3: "Multitudes who sleep in the dust of the earth will awake: some to everlasting life, others to shame and everlasting contempt. Those who are wise will shine like the brightness of the heavens, and those who lead many to righteousness (Tzadikah, צדקה), like the stars forever and ever."
The Christian complaint that no one is perfect hence YHWH won't accept their efforts to live righteously underscores how ignorant Christians are of YHWH's mercy and what he actually requires of His people:
Mic 6:6-8 Wherewith shall I come before Yahweh, and bow myself before the high Elohim? shall I come before him with burnt offerings, with calves of a year old? (7) Will Yahweh be pleased with thousands of rams, or with ten thousands of rivers of oil? shall I give my firstborn for my transgression, the fruit of my body for the sin of my soul? (8) He hath shewed thee, O man, what is good; and what doth Yahweh require of thee, but to do justly, and to love mercy, and to walk humbly with thy Elohim?
Flawless perfection was never the standard:
Ecc_7:20 For there is not a righteous man upon earth, that doeth good, and sinneth not.
Absolute perfection was never YHWH's standard for human righteousness. His standard has always been, "wholeheartedness", being sincere with YHWH, and doing as much as you can to live for him. Dedicating your life to Him, irrespective of your flaws.
1 Samuel 13:14 states, "But now your kingdom shall not continue; Yahweh has sought out a man after his own heart, and Yahweh has commanded him to be prince over his people, because you (King Saul) have not kept what Yahweh commanded you."
This verse indicates that YHWH sought someone whose heart was aligned with His, and that heart was found in David. King David wasn't perfect but nonetheless, YHWH says of Him:
1Ki_11:34 Howbeit I will not take the whole kingdom out of his hand: but I will make him prince all the days of his life for David my servant's sake, whom I chose, because he kept my commandments and my statutes:
1Ki_14:8 And rent the kingdom away from the house of David, and gave it thee: and yet thou hast not been as my servant David, who kept my commandments, and who followed me with all his heart, to do that only which was right in mine eyes;
YHWH says of King David, that he had kept His commandments and was wholehearted with Him. He had followed YHWH with all of His heart, regardless of his human imperfections. He lived a life of repentance, always being ready to admit his faults and repent before YHWH. He didn't demand eternal life, or for YHWH to kill Himself for his sins, but rather he lived a life of commitment to His heavenly Father and was always ready to admit his faults and get back on track. The righteous man falls SEVEN TIMES but he always gets back up:
Proverbs 24:16: "For though the righteous fall seven times, they rise again, but the wicked stumble when calamity strikes."
We must circumcise our hearts. YHWH helps us do that:
Deuteronomy 10:16: "Circumcise therefore the foreskin of your heart, and be no longer stubborn."
Deuteronomy 30:6: "And YHWH your Elohim will circumcise your heart and the heart of your offspring, so that you will love YHWH your Elohim with all your heart and with all your soul, that you may live."
Jeremiah 4:4: "Circumcise yourselves to YHWH, remove the foreskin of your hearts, O men of Judah and inhabitants of Jerusalem; lest my wrath go forth like fire, and burn with none to quench it, because of the evil of your deeds."
Stop playing cards below deck and get to work, lift the sails, and YHWH will provide you with the wind. YHWH provides practically everything, doesn't He? He gives us our existence, the ship, all provisions, the ocean, the destination, the muscles that we use to lift the sails, and the wind that fills them..Everything. We have to not become nihilistic, exercising our faith and free will, taking action, and YHWH will empower us to righteousness. You can't kill YHWH for your sins, but you can lift the sails and let Him provide you with the wind.