1 Cor. 1:19 / Isaiah 29:14 - “I will destroy” the wisdom of the wise. Hebrew - wisdom of their wise men “shall perish.”
1 Cor. 5:13 / Deut. 17:7 - remove the “wicked person.” Hebrew - purge the “evil.” This is more generic evil in the MT.
1 Cor. 15:55 / Hosea 13:14 - O death, where is thy “sting?” Hebrew - O death, where are your “plagues?”
2 Cor. 4:13 / Psalm 116:10 - I believed and so I spoke (past tense). Hebrew - I believe, for I will speak (future tense).
2 Cor. 6:2 / Isaiah 49:8 - I have “listened” to you. Hebrew - I have “answered” you.
Gal. 3:10 / Deut. 27:26 - cursed be every one who does not “abide” by all things. Hebrew - does not “confirm” the words.
Gal. 3:13 / Deut. 21:23 - cursed is everyone who hangs on a “tree.” Hebrew - a hanged man is accursed. The word “tree” does not follow.
Gal. 4:27 / Isaiah 54:1 - “rejoice” and “break forth and shout.” Hebrew - “sing” and “break forth into singing.”
2 Tim. 2:19 / Num. 16:5 - The Lord “knows” those who are His. Hebrew - God will “show” who are His.
Heb. 1:6 / Deut. 32:43 - let all the angels of God worship Him. Hebrew - the Masoretic text omits this phrase from Deut. 32:43.
Heb. 1:12 / Psalm 102:25 - like a “mantle” … “roll them”… “will be changed.” Hebrew - “raiment”… “change”…“pass away.”
Heb. 2:7 / Psalm 8:5 - thou has made Him a little “lower than angels.” Hebrew - made Him but a little “lower than God.”
Heb. 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.”
Heb. 2:13 / Isaiah 8:17 - I will “put my trust in Him.” Hebrew - I will “look for Him.”
Heb. 3:15 / Psalm 95:8 - do not harden your hearts as “in the rebellion.” Hebrew - harden not your hearts “as at Meribah.”
Heb. 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!
Heb. 8:9-10 / Jer. 31:32-33 - (nothing about husband); laws into their mind. Hebrew - I was a husband; law in their inward parts.
Heb. 9:28 / Isaiah 10:22 - “to save those” who are eagerly awaiting for Him. Hebrew - a remnant of them “shall return.”
Heb. 10:5 / Psalm 40:6 - “but a body hast thou prepared for me.” Hebrew - “mine ears hast thou opened.”
Heb. 10:38 / Hab. 2:3-4 - if he shrinks (or draws) back, my soul shall have no pleasure. Hebrew - his soul is puffed up, not upright.
Heb. 11:5 / Gen. 5:24 - Enoch was not “found.” Hebrew - Enoch was “not.”
Heb. 11:21 / Gen. 47:31 - Israel, bowing “over the head of his staff.” Hebrew - there is nothing about bowing over the head of his staff.
Heb. 12:6 / Prov. 3:12 - He chastises every son whom He receives. Hebrew - even as a father the son in whom he delights.
Heb. 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 / Prov. 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 Pet. 2:9 / Exodus 19:6 - you are a “royal priesthood.” Hebrew - you shall be to me a “kingdom of priests.”
1 Pet. 2:9 / Isaiah 43:21 - God’s own people…who called you out of darkness. Heb. - which I formed myself. These are different actions.
1 Pet. 2:22 / Isaiah 53:9 - he “committed no sin.” Hebrew - he “had done no violence.”
1 Pet. 4:18 / Prov. 11:31 - if a righteous man “is scarcely saved.” Hebrew - if the righteous “is recompensed.”
1 Pet. 5:5 / Prov. 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.
scripturecatholic.com/septuagint.html