Matt. 1:23 / Isaiah 7:14 - behold, a “virgin” shall conceive. Hebrew - behold, a “young woman” shall conceive.
Matt. 3:3; Mark 1:3; John 1:23 / Isaiah 40:3 - make “His paths straight.” Hebrew - make “level in the desert a highway.”
Matt. 9:13; 12:7 / Hosea 6:6 - I desire “mercy” and not sacrifice. Hebrew - I desire “goodness” and not sacrifice.
Matt. 12:21 / Isaiah 42:4 - in His name will the Gentiles hope (or trust). Hebrew - the isles shall wait for his law.
Matt. 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.
Matt. 15:9; Mark 7:7 / Isaiah 29:13 - teaching as doctrines the precepts of men. Hebrew - a commandment of men (not doctrines).
Matt. 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; Deut. 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.
scripturecatholic.com/septuagint.html