John the Apostle
John 10:16BSB·traditional attribution

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.

John Calvin Reformed

16. And I have other sheep. Though some refer this indiscriminately to all, both Jews and Gentiles, who were not yet disciples of Christ, yet I have no doubt that he had in his eye the calling of the Gentiles.

Albert Barnes Presbyterian

Verse 16. Other sheep. There are others who shall be members of my redeemed church. I have. This does not imply that they were then his friends, but that they would be. There were others whom it was his purpose and intention to call to the blessings of the gospel and salvation.

Jamieson-Fausset-Brown Reformed

other sheep I have . . . not of this fold: them also I must bring--He means the perishing Gentiles, already His "sheep" in the love of His heart and the purpose of His grace to "bring them" in due time.