Taken from Scripture:
http://www.biblegateway.com/passage/?search=Isaiah%2043&version=KJV
You must understand that the terms He uses here are synomonous often used interchangeably BUT they mean two different things here! He is talking about two different people groups! What two witnesses has He had for about two thousand years? Who are the two groups in which there is currently a dividing wall between the two?
When His people were divided (N Israel, S Israel-Israel and Judah) God told specifically don't touch them, this is of ME. Israel was absorbed into the nations while Judah kept it's identity.
http://www.biblegateway.com/passage/?search=ez%2037&version=KJV
Eph 2
11Therefore, remember that at one time you were Gentiles (heathens) in the flesh, called Uncircumcision by those who called themselves Circumcision, [itself a [e]mere mark] in the flesh made by human hands.
12[Remember] that you were at that time separated (living apart) from Christ [excluded from all part in Him], utterly estranged and outlawed from the rights of Israel as a nation, and strangers with no share in the sacred compacts of the [Messianic] promise [with no knowledge of or right in God's agreements, His covenants]. And you had no hope (no promise); you were in the world without God.
13But now in Christ Jesus, you who once were [so] far away, through (by, in) the blood of Christ have been brought near.
14For He is [Himself] our peace (our bond of unity and harmony). He has made us both [Jew and Gentile] one [body], and has broken down (destroyed, abolished) the hostile dividing wall between us,
15By abolishing in His [own crucified] flesh the enmity [caused by] the Law with its decrees and ordinances [which He annulled]; that He from the two might create in Himself one new man [one new quality of humanity out of the two], so making peace.
16And [He designed] to reconcile to God both [Jew and Gentile, united] in a single body by means of His cross, thereby killing the mutual enmity and bringing the feud to an end.
17And He came and preached the glad tidings of peace to you who were afar off and [peace] to those who were near.
18For it is through Him that we both [whether far off or near] now have an introduction (access) by one [Holy] Spirit to the Father [so that we are able to approach Him].
19Therefore you are no longer outsiders (exiles, migrants, and aliens, excluded from the rights of citizens), but you now share citizenship with the saints (God's own people, consecrated and set apart for Himself); and you belong to God's [own] household.
20You are built upon the foundation of the apostles and prophets with Christ Jesus Himself the chief Cornerstone.
21In Him the whole structure is joined (bound, welded) together harmoniously, and it continues to rise (grow, increase) into a holy temple in the Lord [a sanctuary dedicated, consecrated, and sacred to the presence of the Lord].
kari