28For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh:
29 But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.
Forget about what man says What does God's word say about this issue ? Well according to the word of Truth, a Jew is one inwardly !
It is when a man or woman has partaken of a inward work of the Holy Spirit. A Jew is that hidden person of the heart Peter points to in 1Pet 3:4
4But let it be the hidden man of the heart, in that which is not corruptible, even the ornament of a meek and quiet spirit, which is in the sight of God of great price.
That which is born again of incorruptible seed 1 Pet 1:23
Rom 7:22 points to a Jew Rom 7:22
22For I delight in the law of God after the inward man:
That inward part of a redeemed born again Person that delights in the Law of God, which only a born again does ! Being a Jew is that one who desires Truth in the inward parts like David acknowledges Ps 51:6
6Behold, thou desirest truth in the inward parts: and in the hidden part thou shalt make me to know wisdom.
God in answering Job stated Job 38:36
36Who hath put wisdom in the inward parts? or who hath given understanding to the heart? Note: on given understanding See 1 Jn 5:19
A Jew is one whom God hath put wisdom in the inward parts, understanding to the mind.
Job earlier says that Understanding is Job 28:28
28And unto man he said, Behold, the fear of the LORD, that is wisdom; and to depart from evil is understanding.
It is the Fear of the Lord, and to depart from evil is understanding ! And Christ gives Understanding 1 Jn 5:19, so it is He that causes one to depart from Evil !
A Jew is any Person, who by an inward work of Grace and the Spirit of God, Fears God ! The virtuous woman in Prov 31 was a Jew Prov 31:30
30Favour is deceitful, and beauty is vain: but a woman that feareth the LORD, she shall be praised. See Rom 2:29
Cornelius the gentile and his household were Jews Acts 10:2,35
2A devout man, and one that feared God with all his house, which gave much alms to the people, and prayed to God alway.
35But in every nation he that feareth him, and worketh righteousness, is accepted with him.
The Gospel is sent as a word of Salvation to all whom Fear God Acts 13:26
26Men and brethren, children of the stock of Abraham, and whosoever among you feareth God, to you is the word of this salvation sent.
You see, A Genuine Fear of God is what God defines as a Jew, not a ethnic race of flesh. Yes there is a people like that, but they are not the Jews that God recognizes as His People !