Where do you find this Septuagint today, or did it only exist from approximately 300 BC to 100 AD? Do you have a copy of the Septuagint today?
Here are some verses taken from the Septuagint the Hebrew Version follows.
Matthew 3:3; Mark 1:3; John 1:23 / Isaiah 40:3 — make “His paths straight.” Hebrew — make “level in the desert a highway.”
Matthew 9:13; 12:7 / Hosea 6:6 — I desire “mercy” and not sacrifice. Hebrew — I desire “goodness” and not sacrifice.
Matthew 12:21 / Isaiah 42:4 — in His name will the Gentiles hope (or trust). Hebrew — the isles shall wait for his law.
Matthew 13:15 / Isaiah 6:10 — heart grown dull; eyes have closed; to heal. Hebrew — heart is fat; ears are heavy; eyes are shut; be healed.
Matthew 15:9; Mark 7:7 / Isaiah 29:13 — teaching as doctrines the precepts of men. Hebrew — a commandment of men (not doctrines).
Matthew 21:16 / Psalm 8:2 — out of the mouth of babes and sucklings thou has “perfect praise.” Hebrew — thou has “established strength.”
Mark 7:6–8 — Jesus quotes Isaiah 29:13 from the Septuagint — “This people honors me with their lips, but their heart is far from me; in vain do they worship me, teaching as doctrines the precepts of men.”
Luke 3:5–6 / Isaiah 40:4–5 — crooked be made straight, rough ways smooth, shall see salvation. Hebrew — omits these phrases.
Luke 4:18 / Isaiah 61:1 — and recovering of sight to the blind. Hebrew — the opening of prison to them that are bound.
Luke 4:18 / Isaiah 58:6 — to set at liberty those that are oppressed (or bruised). Hebrew — to let the oppressed go free.
John 6:31 / Psalm 78:24 — He gave them “bread” out of heaven to eat. Hebrew — gave them “food” or “grain” from heaven.
John 12:38 / Isaiah 53:1 — who has believed our “report?” Hebrew — who has believed our “message?”
John 12:40 / Isaiah 6:10 — lest they should see with eyes…turn for me to heal them. Hebrew — shut their eyes…and be healed.
Acts 2:19 / Joel 2:30 — blood and fire and “vapor” of smoke. Hebrew — blood and fire and “pillars” or “columns” of smoke.
Acts 2:25–26 / Psalm 16:8 — I saw…tongue rejoiced…dwell in hope.. Hebrew — I have set…glory rejoiced…dwell in safety.
Acts 4:26 / Psalm 2:1 — the rulers “were gathered together.” Hebrew — rulers “take counsel together.”
Acts 7:14 / Gen. 46:27; Deuteronomy 10:22 — Stephen says “seventy-five” souls went down to Egypt. Hebrew — “seventy” people went.
Acts 7:27–28 / Exodus 2:14 — uses “ruler” and judge; killed the Egyptian “yesterday.” Hebrew — uses “prince” and there is no reference to “yesterday.”
Acts 7:43 / Amos 5:26–27 — the tent of “Moloch” and star of god of Rephan. Hebrew — “your king,” shrine, and star of your god.
Acts 8:33 / Isaiah 53:7–8 — in his humiliation justice was denied him. Hebrew — by oppression…he was taken away.
Acts 13:41 / Habakkuk 1:5 — you “scoffers” and wonder and “perish.” Hebrew — you “among the nations,” and “be astounded.”
Acts 15:17 / Amos 9:12 — the rest (or remnant) of “men.” Hebrew — the remnant of “Edom.”
Romans 2:24 / Isaiah 52:5 — the name of God is blasphemed among the Gentiles. Hebrew — blasphemed (there is no mention of the Gentiles).
Romans 3:4 / Psalm 51:4 — thou mayest “prevail” (or overcome) when thou art judged. Hebrew — thou might “be clear” when thou judges.
Romans 3:12 / Psalm 14:1,3 — they “have gone wrong.” Hebrew — they are “corrupt” or “filthy.”
Romans 3:13 / Psalm 5:9 — they use their tongues to deceive. Hebrew — they flatter with their tongues. There is no “deceit” language.
Romans 3:13 / Psalm 140:3 — the venom of “asps” is under their lips. Hebrew — “Adder’s” poison is under their lips.
Romans 3:14 / Psalm 10:7 — whose mouth is full of curses and “bitterness.” Hebrew — cursing and “deceit and oppression.”
Romans 9:17 / Exodus 9:16 — my power “in you”; my name may be “proclaimed.” Hebrew — show “thee”; may name might be “declared.”
Romans 9:25 / Hosea 2:23 — I will call my people; I will call my beloved. Hebrew — I will have mercy (love versus mercy).
Romans 9:27 / Isaiah 10:22 — only a remnant of them “will be saved.” Hebrew — only a remnant of them “will return.”
Romans 9:29 / Isaiah 1:9 — had not left us “children.” Hebrew — Jehovah had left us a “very small remnant.”
Romans 9:33; 10:11; 1 Peter 2:6 / Isaiah 28:16 — he who believes will not be “put to shame.” Hebrew — shall not be “in haste.”
Romans 10:18 / Psalm 19:4 — their “voice” has gone out. Hebrew — their “line” is gone out.
Romans 10:20 / Isaiah 65:1 — I have “shown myself” to those who did not ask for me. Hebrew — I am “inquired of” by them.
Romans 10:21 / Isaiah 65:2 — a “disobedient and contrary” people. Hebrew — a “rebellious” people.
Romans 11:9–10 / Psalm 69:22–23 — “pitfall” and “retribution” and “bend their backs.” Hebrew — “trap” and “make their loins shake.”
Romans 11:26 / Isaiah 59:20 — will banish “ungodliness.” Hebrew — turn from “transgression.”
Romans 11:27 / Isaiah 27:9 — when I take away their sins. Hebrew — this is all the fruit of taking away his sin.
Romans 11:34; 1 Corinthians 2:16 / Isaiah 40:13 -the “mind” of the Lord; His “counselor.” Hebrew — “spirit” of the Lord; “taught” Him.
Romans 12:20 / Prov. 25:21 — feed him and give him to drink. Hebrew — give him “bread” to eat and “water” to drink.
Romans 15:12 / Isaiah 11:10 — the root of Jesse…“to rule the Gentiles.” Hebrew — stands for an ensign. There is nothing about the Gentiles.
Romans 15:21 / Isaiah 52:15 — been told “of him”; heard “of him.” Hebrew — does not mention “him” (the object of the prophecy).
1 Corinthians 1:19 / Isaiah 29:14 — “I will destroy” the wisdom of the wise. Hebrew — wisdom of their wise men “shall perish.”
1 Corinthians 5:13 / Deuteronomy 17:7 — remove the “wicked person.” Hebrew — purge the “evil.” This is more generic evil in the MT.
1 Corinthians 15:55 / Hosea 13:14 — O death, where is thy “sting?” Hebrew — O death, where are your “plagues?”
2 Corinthians 4:13 / Psalm 116:10 — I believed and so I spoke (past tense). Hebrew — I believe, for I will speak (future tense).
2 Corinthians 6:2 / Isaiah 49:8 — I have “listened” to you. Hebrew — I have “answered” you.
Galatians 3:10 / Deuteronomy 27:26 — cursed be every one who does not “abide” by all things. Hebrew — does not “confirm” the words.
Galatians 3:13 / Deuteronomy 21:23 — cursed is everyone who hangs on a “tree.” Hebrew — a hanged man is accursed. The word “tree” does not follow.
Galatians 4:27 / Isaiah 54:1 — “rejoice” and “break forth and shout.” Hebrew — “sing” and “break forth into singing.”
2 Timothy 2:19 / Numbers 16:5 — The Lord “knows” those who are His. Hebrew — God will “show” who are His.
Hebrews 1:6 / Deuteronomy 32:43 — let all the angels of God worship Him. Hebrew — the Masoretic text omits this phrase from Deuteronomy 32:43.
Hebrews 1:12 / Psalm 102:25 — like a “mantle” … “roll them”… “will be changed.” Hebrew — “raiment”… “change”…“pass away.”
Hebrews 2:7 / Psalm 8:5 — thou has made Him a little “lower than angels.” Hebrew — made Him but a little “lower than God.”
Hebrews 2:12 / Psalm 22:22 — I will “ sing” thy praise. Hebrew — I will praise thee. The LXX and most NTs (but not the RSV) have “sing.”
Hebrews 2:13 / Isaiah 8:17 — I will “put my trust in Him.” Hebrew — I will “look for Him.”
Hebrews 3:15 / Psalm 95:8 — do not harden your hearts as “in the rebellion.” Hebrew — harden not your hearts “as at Meribah.”
Hebrews 3:15; 4:7 / Psalm 95:7 — when you hear His voice do not harden not your hearts. Hebrew — oh that you would hear His voice!
Hebrews 8:9–10 / Jeremiah 31:32–33 — (nothing about husband); laws into their mind. Hebrew — I was a husband; law in their inward parts.
Hebrews 9:28 / Isaiah 10:22 — “to save those” who are eagerly awaiting for Him. Hebrew — a remnant of them “shall return.”
Hebrews 10:5 / Psalm 40:6 — “but a body hast thou prepared for me.” Hebrew — “mine ears hast thou opened.”
Hebrews 10:38 / Habakkuk 2:3–4 — if he shrinks (or draws) back, my soul shall have no pleasure. Hebrew — his soul is puffed up, not upright.
Hebrews 11:5 / Genesis. 5:24 — Enoch was not “found.” Hebrew — Enoch was “not.”
Hebrews 11:21 / Genesis. 47:31 — Israel, bowing “over the head of his staff.” Hebrew — there is nothing about bowing over the head of his staff.
Hebrews 12:6 / Proverbs 3:12 — He chastises every son whom He receives. Hebrew — even as a father the son in whom he delights.
Hebrews 13:6 / Psalm 118:6 — the Lord “is my helper.” Hebrew — Jehova “is on my side.” The LXX and the NT are identical.
James 4:6 / Proverbs 3:34 — God opposes the proud but gives grace to the humble. Hebrew — He scoffs at scoffers and gives grace to the lowly.
1 Peter 1:24 / Isaiah 40:6 — all its “glory” like the flower. Hebrew — all the “goodliness” as the flower.
1 Peter 2:9 / Exodus 19:6 — you are a “royal priesthood.” Hebrew — you shall be to me a “kingdom of priests.”
1 Peter 2:9 / Isaiah 43:21 — God’s own people…who called you out of darkness. Hebrew — which I formed myself. These are different actions.
1 Peter 2:22 / Isaiah 53:9 — he “committed no sin.” Hebrew — he “had done no violence.”
1 Peter 4:18 / Proverbs 11:31 — if a righteous man “is scarcely saved.” Hebrew — if the righteous “is recompensed.”
1 Peter 5:5 / Proverbs 3:34 — God opposes the proud but gives grace to the humble. Hebrew — He scoffs at scoffers and gives grace to lowly.
Isaiah 11:2 — this verse describes the Seven Gifts of the Holy Spirit, but the seventh gift, “piety,” is only found in the Septuagint.