John and Doves,

We agree with Jennie
http://www.fivedoves.com/letters/march2011/jennie326.htm

and Jan Mikael ( and others on the Board ) that God does distinguish between those who walk in the Light from those who do not walk in the Light, even though they are Born Again Christians.

God is highly selective and He knows how to distinguish this one from that one.
He does not use labels .
" All souls are Mine" Ezekiel 18:4

In Ezekiel 33: 12, 13 God speaks of a daily walk with personal accountability. Our spiritual condition can change from time to time, if we do not continue in the Light. 

Ezekiel 34 speaks directly to shepherds ( religious leaders ) of how God sees His flock scattered because of the shepherds ... "Behold I judge between cattle and cattle, between the rams and the he-goats." ( 17 ).
" Behold, I even I, will judge between the fat cattle and between the lean cattle." (20 )
" I will judge between cattle and cattle " ( 22 ).

These lines are spoken directly to religious leaders and to those who follow them.
( most likely Born Again )

God always reveals Himself  throughout Scripture as One who discerns and distinguishes.

Psalm 18: 25
"With the merciful Thou wilt show Thyself merciful;
With an upright man, thou wilt show Thyself upright;
With the pure Thou wilt show Thyself pure;
And with the froward ( aggressive, bold ) Thou wilt show Thyself  froward. "

Isaiah 28: 23--29
Different strokes for different folks ...

"For his God doth instruct him to discretion ( how to distinguish ) and doth teach him.
For the fitches ( spelt ) are not threshed with a threshing instrument;
neither is a cart wheel turned about upon the cumin;
but the fitches are beaten out with a staff,
and the cumin with a rod.

Bread corn ( grain: such as wheat, barley or rye ) is bruised;
Because he will not ever be threshing it,
nor break it with the wheel of his cart,
nor bruise it with his horsemen."

Note : American "corn" was not discovered until Columbus came to America. 1492
" Corn" in the Old World meant "grain", such as wheat, barley and rye.
Corn in the New World means the corn that is yellow and eaten on the cob, or popped as popcorn.
The O.W. term and the N.W. term do not have the same meaning.

Fitches http://www.searchgodsword.org/enc/isb/view.cgi?number=T3459
Corn http://www.agron.iastate.edu/courses/agron212/readings/corn_history.htm

More on separation :
Mark 13: 35 ... the Rapture / Translation

" Watch ye therefore; for you know not when the Master of the house cometh,
at even, ( Matthew 27: 51--53 ) a special separation ; Ephesians 4:8
or at Midnight ( Matthew 25:1-10 ) separation of the wise virgins from the foolish virgins ( both were waiting )
or at the cockcrowing ( Rev. 16: 15 ) separation of regenerated Christians ( after the Midnight Rapture )
or in the morning (John 11: 24 ) separation of the just from the unjust; Resurrection of the Just

Yes, truly, God separates those who are alive in Christ ( 1 Thessalonians 4: 15 + 17 ) from the rest.

"This also cometh forth from the Lord of hosts, which is WONDERFUL in counsel, and excellent in working."
Isaiah 28: 29

In Him,
Jim Goodrick