One New Man

The Bible tells us that the only way to be reconciled with the One True God of all creation is by God's grace alone, faith alone which He imparts by hearing the Word of God, and in Jesus Christ alone. There is only one Mediator between God and humans and that is the Messiah Jesus (Yeshua in Hebrew in the original text - Read more.). Another term for this is being 'born again' by the power of God's Holy Spirit which begins to reside and work within the person's innermost being (spirit, mind, will and emotions) and through you to lead a purposeful life which glorifies God. 
 When this happens the person is no longer distinguished as a Jew or Gentile non-Jew, but a 'new creation.' There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus (Galatians 3:28-29 ).

The recipients of this saving faith are spiritually reconciled with the Creator of heaven and earth (universe) as were their patriarchs and heirs of God's promises Abraham, Isaac, and Jacob. 

God is a Spirit, therefore, He chose to manifest Himself to the world through the Bible (His Word) and through the person of Jesus Christ. His born again children are not to live on bread alone, but to grow into the men and women of God that He created them to be by consuming, believing, understanding, maturing, and by being doers of the Word. This process is called sanctification. Sanctification makes disciples who then go on to share the Good News - The Gospel, and making other disciples, who will go onto to repeat this supernatural life-cycle fulfilling the Great Commission  - Making Disciples - of all nations (Matthew 28:16-20 disciples - born-again believers in the Lord Jesus). 

      Some Relevant Bible Verses...

John 3:1-21 English Standard Version 
You Must Be Born Again 
Now there was a man of the Pharisees named Nicodemus, a ruler of the Jews. 2 This man came to Jesus[a] by night and said to him, “Rabbi, we know that you are a teacher come from God, for no one can do these signs that you do unless God is with him.” 3 Jesus answered him, “Truly, truly, I say to you, unless one is born again[b] he cannot see the kingdom of God.” 4 Nicodemus said to him, “How can a man be born when he is old?  Read more...

Ephesians 2:14-16 New International Version (NIV) 
For He Himself is our peace, who has made the two groups one (both Jews and Non-Jews known as Gentiles) and has destroyed the barrier, the dividing wall of hostility, by setting aside in His flesh (the Messiah) the man-made law with its commands and regulations. His purpose was to create in Himself one new humanity out of the two, thus making peace, and in one body to reconcile both of them to God through the cross (stake or tree as it is sometimes referred to in different Bible translations), by which he put to death their hostility (toward each other).

1 Timothy 2:5
For there is only one God and one Mediator who can reconcile God and humanity--the man Christ Jesus.

2 Corinthians 5:17 
Therefore, if anyone is in Christ, the new creation has come: The old has gone, the new is here!
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1 Corinthians 12:13
For by one Spirit we were all baptized into one body--whether Jews or Greeks, whether slaves or free — and have all been made to drink into one Spirit.