As best I can recall, the passage that started this thought path for me was John 10:16.
I found this list of a whole boat load of different translations. I went down through most of them and counted only a few that didn't include the word 'bring'. (Those used the word 'lead'.) I don't have a problem with the word lead, but He didn't say "I must lead THIS flock to them, and you all will become a part of this great new flock." WE join the flock that is true Israel, WE become true sons of Abraham. This new thought lead me to ask when the church actually started. I acknowledge that I may not be remembering correctly - maybe there was a different passage that started me in this direction, but this is the one that now informs my thinking about this question more than any other I can recall.
New International Version
I have other sheep that are not of this sheep pen. I must bring them also. They too will listen to my voice, and there shall be one flock and one shepherd.
New Living Translation
I have other sheep, too, that are not in this sheepfold. I must bring them also. They will listen to my voice, and there will be one flock with one shepherd.
English Standard Version
And I have other sheep that are not of this fold. I must bring them also, and they will listen to my voice. So there will be one flock, one shepherd.
Berean Standard Bible
I have other sheep that are not of this fold. I must bring them in as well, and they will listen to My voice. Then there will be one flock and one shepherd.
Berean Literal Bible
And I have other sheep which are not of this fold. It behooves Me to bring those also, and they will hear My voice, and there will be one flock with one shepherd.
King James Bible
And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd.
New King James Version
And other sheep I have which are not of this fold; them also I must bring, and they will hear My voice; and there will be one flock and one shepherd.
New American Standard Bible
And I have other sheep that are not of this fold; I must bring them also, and they will listen to My voice; and they will become one flock, with one shepherd.
NASB 1995
“I have other sheep, which are not of this fold; I must bring them also, and they will hear My voice; and they will become one flock with one shepherd.
NASB 1977
“And I have other sheep, which are not of this fold; I must bring them also, and they shall hear My voice; and they shall become one flock with one shepherd.
Legacy Standard Bible
And I have other sheep, which are not from this fold; I must bring them also, and they will hear My voice; and they will become one flock with one shepherd.
Amplified Bible
I have other sheep [beside these] that are not of this fold. I must bring those also, and they will listen to My voice and pay attention to My call, and they will become one flock with one Shepherd.
Christian Standard Bible
But I have other sheep that are not from this sheep pen; I must bring them also, and they will listen to my voice. Then there will be one flock, one shepherd.
Holman Christian Standard Bible
But I have other sheep that are not of this fold; I must bring them also, and they will listen to My voice. Then there will be one flock, one shepherd.
American Standard Version
And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice: and they shall become one flock, one shepherd.
Contemporary English Version
I have other sheep that are not in this sheep pen. I must also bring them together, when they hear my voice. Then there will be one flock of sheep and one shepherd.
English Revised Version
And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and they shall become one flock, one shepherd.
GOD'S WORD® Translation
I also have other sheep that are not from this pen. I must lead them. They, too, will respond to my voice. So they will be one flock with one shepherd.
Good News Translation
There are other sheep which belong to me that are not in this sheep pen. I must bring them, too; they will listen to my voice, and they will become one flock with one shepherd.
International Standard Version
I have other sheep that don't belong to this fold. I must lead these also, and they'll listen to my voice. So there will be one flock and one shepherd.
NET Bible
I have other sheep that do not come from this sheepfold. I must bring them too, and they will listen to my voice, so that there will be one flock and one shepherd.
New Heart English Bible
I have other sheep, which are not of this fold. I must bring them also, and they will hear my voice. They will become one flock with one shepherd.
Webster's Bible Translation
And other sheep I have which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd.
Weymouth New Testament
I have also other sheep--which do not belong to this fold. Those also I must bring, and they will listen to my voice; and they shall become one flock under one Shepherd.
Majority Text Translations
Majority Standard Bible
I have other sheep that are not of this fold. I must bring them in as well, and they will listen to My voice. Then there will be one flock and one shepherd.
World English Bible
I have other sheep which are not of this fold. I must bring them also, and they will hear my voice. They will become one flock with one shepherd.
Literal Translations
Literal Standard Version
and other sheep I have that are not of this fold, these also it is necessary for Me to bring, and My voice they will hear, and there will become one flock—one shepherd.
Berean Literal Bible
And I have other sheep which are not of this fold. It behooves Me to bring those also, and they will hear My voice, and there will be one flock with one shepherd.
Young's Literal Translation
and other sheep I have that are not of this fold, these also it behoveth me to bring, and my voice they will hear, and there shall become one flock -- one shepherd.
Smith's Literal Translation
And I have, other sheep, which are not of this court-yard: and I must also bring them, and they shall hear my voice; and there shall be one flock, and one shepherd.
Catholic Translations
Douay-Rheims Bible
And other sheep I have, that are not of this fold: them also I must bring, and they shall hear my voice, and there shall be one fold and one shepherd.
Catholic Public Domain Version
And I have other sheep that are not of this fold, and I must lead them. They shall hear my voice, and there shall be one sheepfold and one shepherd.
New American Bible
I have other sheep that do not belong to this fold. These also I must lead, and they will hear my voice, and there will be one flock, one shepherd.
New Revised Standard Version
I have other sheep that do not belong to this fold. I must bring them also, and they will listen to my voice. So there will be one flock, one shepherd.
Translations from Aramaic
Lamsa Bible
I have other sheep also, which are not of this fold; them also I must bring, and they will hear my voice; and all the sheep will become one flock and one shepherd.
Aramaic Bible in Plain English
“But I have other sheep which were not from this fold; I must also bring them. They also will hear my voice, and the entire fold shall be one, and One Shepherd.”
NT Translations
Anderson New Testament
And other sheep I have, which are not of this fold; those, also, must I bring, and they will hear my voice: and there shall be one flock, one shepherd.
Godbey New Testament
And I have other sheep which are not of this fold: and it behooves me to bring them and they shall hear my voice, and there shall be one fold, and one shepherd.
Haweis New Testament
And other sheep I have, which are not of this fold: these also I must bring, and they shall hear my voice; and there shall be one fold, one shepherd.
Mace New Testament
other sheep I have, which are not of this fold: them also I must bring; they will hear my voice; and so there shall be but one fold, and one pastor.
Weymouth New Testament
I have also other sheep--which do not belong to this fold. Those also I must bring, and they will listen to my voice; and they shall become one flock under one Shepherd.
Worrell New Testament
And other sheep I have, which are not of this fold: them also I must bring, and they will hear My voice; and they shall become one flock, one Shepherd.
Worsley New Testament
And I have other sheep, which are not of this fold: them also I must bring, and they will hear my voice; so there shall be one fold, and one shepherd.