John 10:16
I have other sheep [also] which are not [presently] in this corral; I must lead them, too. They will hear my voice and become one flock [i.e., with the others], having one shepherd. [Note: This probably refers to believing Gentiles becoming God's people, along with the Jews].
Ephesians 1:10
[He did this] to fulfill His plan at the proper time, by bringing together everything [in the universe] under Christ's headship --- things both in heaven and on earth.
Ephesians 2:14-16
For Christ is [the source of] our peace. He made both [Jews and Gentiles] one people, and broke down the barrier wall of hostility that divided them,
John 11:52
And not just [die] for the [Jewish] nation, but also that He would assemble together into one body the children of God who were scattered [throughout the world].