What unites all believers under the new covenant?

Answer

"Wherefore remember, that you being in time past Gentiles in the flesh, who are called Uncircumcision by
that which is called the Circumcision in the flesh made by hands; that at that time you were without Christ,
being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no
hope, and without God in the world: but now in Christ Jesus you who sometimes were far off are made
nigh by the blood of Christ." Eph. 2: 11-13.
SIMILARITIES BETWEEN THE TWO COVENANTS

What prophecy of Isaiah was fulfilled at Christ's birth?
Whom did Christ say the Holy Spirit would glorify?
In what words does Christ recognize marriage as of God?
What reason is given for making the new covenant?
On which day was a double portion of manna gathered?
What does Malachi say of those that fear the Lord?
How enduring is this kingdom to be?

Questions & Answers are from the book Bible Readings for the Home Circle