The same response like to KJV1611 - what are you trying to prove?
Is it in some version of Old Testament? Yes (in LXX).
Is it confirmed by Holy Spirit and apostles that is should be there? Yes, it is, in New Testament.
So what are you trying to prove, that Holy Spirit and apostles chose to use wrong version? What kind of CHECKMATE are you trying to do?
TO DIno, Trifumus and others about LXX
The Septuagint, Greek translation of the Hebrew Old Testament which according to most sources, it was produced by seventy-two Jewish translators in Alexandria, Egypt during the reign of Ptolemy II Philadelphus (285-246 B.C.). In his introduction to the translation of the Greek Septuagint, Sir Lancelot Brenton states, “We need not wonder that but little is known with accuracy on this subject; for, with regard to the ancient versions of scriptures in general, we possess no information whatever as to the time or place of the execution, or by whom they were made.”
Historical Account of the Septuagint Version
The modern translations of the Septuagint (abbreviated LXX) are not from 285 BC, 100 BC, or even 100 AD. Rather, what scholars refer to as the “Septuagint,” come from 4th century texts. However,
1. We know that God committed the preservation of the Old Testament to the
Jews, Romans 3:1-2. If the LXX versions were inspired Old Testament, then, the preservation of the LXX, must be credited to the Christian Church, not to the Jews.
2. God ruled out any Egyptian translation of the OT in Jeremiah 44:26.
3. Only those priestly tribe of Levi were to copy the scriptures-Deut. 17:18; 31:25,26; 33:10 1 Chron. 16:4; Ezra 7:1-6; Malachi 2:7
BTW, the LXX contained Apocrypha except II Esdras, a prophetic book. For the sake of others who do not know the listings of Apocrypha who rest their faith in LXX are herein below:
a. Wisdom of Solomon 30 BC Didactic
b. Ecclesiasticus 32 BC Didactic
c. Tobit c.200 BC Religious
d. 1 Esdras c. 150BC Historic
e. 1 Maccabees c. 110 BC Historic
f. II Macabees c. 100 BC Historic
g. Judith c. 150 BC Romance
h. Baruch c. 100 BC Prophetic
i. Letter of Jeremiah c. 200 BC Prophetic
j. II Esdras c. 100 AD Prophetic
k. Addition to Esther c. 130BC Legendary
l. Prayer of Azariah c. 100 BC Legendary
m. Susanna c. 100 BC Legendary
n. Bel and Dragon c. 100 BC Legendary
o. Prayer of Manasseh c. 150 BC Legendary
Acceptance of LXX which contained the above list is to accept RCC system.