Romans 2:28

nor is that circumcision, which is only in appearance, in the flesh;

Galatians 6:15

For in Christ Jesus neither circumcision availeth any thing, nor uncircumcision, but being created anew.

Matthew 3:9

"We have Abraham for our father:" for I tell you, that God is able of these stones to raise up children to Abraham.

Romans 9:6-8

Not that the word of God hath failed. For they are not all Israel, who are descended from Israel.

Revelation 2:9

I know thy works and affliction and poverty (but thou art rich) and I know the blasphemy of those that say they are Jews, and are not, but are the synagogue of Satan.

John 1:47

And when Jesus saw Nathaniel coming towards Him, He saith concerning him, "Behold an Israelite indeed, in whom is no guile."

John 8:37-39

I know that ye are the seed of Abraham, but ye seek to kill me, because my word hath no place in you.

Romans 2:17

Behold thou art called a Jew, and restest on the law, and boastest in God,

Romans 4:10-12

How then was it accounted to him? when he was in circumcision, or in uncircumcision? Not in circumcision, but in uncircumcision.

1 Peter 3:21

The resemblance of which, even baptism, doth also now save us, (not the outward cleansing of filth from the flesh, but the answer of a good conscience towards God) by the resurrection of Jesus Christ,

Treasury of Scripture Knowledge

Summary

For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh:

Bible References

For he

Romans 9:6
Not that the word of God hath failed. For they are not all Israel, who are descended from Israel.
Matthew 3:9
"We have Abraham for our father:" for I tell you, that God is able of these stones to raise up children to Abraham.
John 1:47
And when Jesus saw Nathaniel coming towards Him, He saith concerning him, "Behold an Israelite indeed, in whom is no guile."
John 8:37
I know that ye are the seed of Abraham, but ye seek to kill me, because my word hath no place in you.
Galatians 6:15
For in Christ Jesus neither circumcision availeth any thing, nor uncircumcision, but being created anew.
Revelation 2:9
I know thy works and affliction and poverty (but thou art rich) and I know the blasphemy of those that say they are Jews, and are not, but are the synagogue of Satan.

Neither

Romans 4:10
How then was it accounted to him? when he was in circumcision, or in uncircumcision? Not in circumcision, but in uncircumcision.
1 Peter 3:21
The resemblance of which, even baptism, doth also now save us, (not the outward cleansing of filth from the flesh, but the answer of a good conscience towards God) by the resurrection of Jesus Christ,