a member of the people and cultural community whose traditional religion is Judaism and who trace their origins through the ancient Hebrew people of Israel to Abraham.
The word JEW is only used in the Old Testament 12 times, and it first appears in the book of ESTHER where it is used 10 times. In each case it refers to Mordecai and his people:
2:5 Now in Shushan the palace there was a certain Jew, whose name was Mordecai, the son of Jair, the son of Shimei, the son of Kish, a Benjamite;
3:4 Now it came to pass, when they spake daily unto him, and he hearkened not unto them, that they told Haman, to see whether Mordecai’s matters would stand: for he had told them that he was a Jew.
5:13 Yet all this availeth me nothing, so long as I see Mordecai the Jew sitting at the king’s gate.
6:10 Then the king said to Haman, Make haste, and take the apparel and the horse, as thou hast said, and do even so to Mordecai the Jew, that sitteth at the king’s gate: let nothing fail of all that thou hast spoken.
8:7 Then the king Ahasuerus said unto Esther the queen and to Mordecai the Jew, Behold, I have given Esther the house of Haman, and him they have hanged upon the gallows, because he laid his hand upon the Jews.
9:29 Then Esther the queen, the daughter of Abihail, and Mordecai the Jew, wrote with all authority, to confirm this second letter of Purim.
9:31 To confirm these days of Purim in their times appointed, according as Mordecai the Jew and Esther the queen had enjoined them, and as they had decreed for themselves and for their seed, the matters of the fastings and their cry.
10:3 For Mordecai the Jew was next unto king Ahasuerus, and great among the Jews, and accepted of the multitude of his brethren, seeking the wealth of his people, and speaking peace to all his seed.
The last two occurrences of the word are found in Jeremiah and Zechariah,
That the word JEW and Hebrew are synonymous is seen:
Jeremiah 34:9 That every man should let his manservant, and every man his maidservant, being an Hebrew or an Hebrewess, go free; that none should serve himself of them, to wit, of a Jew his brother.
Zechariah 8:23 Thus saith the Lord of hosts; In those days it shall come to pass, that ten men shall take hold out of all languages of the nations, even shall take hold of the skirt of him that is a Jew, saying, We will go with you: for we have heard that God is with you.