Ephesians 2:18 - When 2 x 1 equals 1...

"...since through Him we are having the approach the both in one Spirit toward the Father."

-Everybody now, Gentiles and Jews, those who were far away and those who were in the neighborhood, now approach God together, and together in one Spirit through Christ make it all the way...!  And don’t miss the Trinity sighting!  Jesus - God the Son is the Way, God the Father is the Destination, and God the Spirit is the catalyst, the impetus, the unifying force.

-Two groups, one Spirit, resulting in one body.  Which gives us the equation, (1+1)x1=1.  In fact, you could put any number you want in those parentheses, any number of otherwise disparate groups or individuals, and the Holy Spirit will make them one.  In math, there is would be what is called the Inverse Property of Multiplication, and, like that mathematical expression, in a sense the Spirit does flip the natural order of division on its head.  The same Holy Spirit Who indwells each and every person who truly trusts in Christ is indeed the supernatural unifying force between believers and between otherwise disparate groups of the same.  History, ethnicity, race - all temporal differences and relational roadblocks are made of no effect by the Spirit of God.  And to be sure, there may be no greater divide than that which grew up (and which still exists outside of Christ) between Jews and Gentiles, since by very definition the latter group is defined simply as those who are NOT the former, the distinction becoming extremely important to the Jewish people, going back for almost as long as the very beginnings of nations themselves.  With a one-of-kind culture derived from an exclusive long-standing religious tradition, and a parallel strict prohibition against racial intermarriage, the ancient divide emanating from Jews towards Gentiles and back again is long-standing and wide.  The divide seems rather a non-starter in modern day Christendom, dominated as that is by Gentiles who have grown up with post-holocaust sensibilities (altho there was a time when even some well-meaning Christ-followers could have held onto a strain of anti-semitism against the ones who "killed Christ"), but it was quite real in Paul’s day, and today is still very real to most who are of the seed of Jacob aka Israel, having been widened and exacerbated by centuries of additional subjegation as well as occasional genocide on the part of Gentiles, even those in the guise of Christians (think the ‘holy’ Crusades and Hitler’s ‘final solution’).  But this divide of divides (and all others) is totally abrogated and superceded by the Holy Spirit.  There is no divide too wide, no wall too high, no rivalry too ancient but that the Spirit does not difuse the hostility and overflow oneness and unity and love in its place...