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 is the ground of justification on God's part?
What does the prophet Jeremiah declare Christ to be?
21. Although Pilate had declared his belief in Christ's innocence, yet what cruel punishment did he inflict upon Him?
What is the Lord able to do regarding the future?
What is revealed in God's law?
What is the first which He took away?
Will the Sabbath be observed as a day of worship in the new earth?

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