“I am the good shepherd, and I know My own and My own know Me, even as the Father knows Me and I know the Father; and I lay down My life for the sheep. 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.”
In terms of the Gentiles, Ephesians 2:12 states: “Remember that you [Gentiles] were at that time separate from Christ, excluded from the commonwealth of Israel, and strangers to the covenants of promise, having no hope and without God in the world.” Recall that Jesus had stated: “I was sent only to the lost sheep of the house of Israel.” (Mark 15:24) However, here at John chapter 10, when Jesus says, “I must bring them also,” He points to a time in which He will draw all men, Jews and Gentiles alike, by stating: “And I, if I am lifted up from the earth, will draw all men to Myself.” (John 12:32)
In terms of the “one flock,” Calvinist, William MacDonald, explains: “In the latter part of the verse there is the very important change from the fold of Judaism to the flock of Christianity. This verse gives a little preview of the fact that in Christ, Jew and Gentile would be made one, and that the former distinctions between these peoples would disappear.” (Believer’s Bible Commentary, p.1526, emphasis mine)
Agreed.
John Calvin comments: “Even as there are many wolves within the church, so there are many ‘sheep’ outside the church. But it is not wholly applicable to this passage, which refers to the outer aspect of the church, in that Gentiles, who had been temporarily strangers, were later taken into the kingdom of God along with the Jews. Yet I agree that it applies in the sense that Christ calls unbelievers ‘sheep’ who in themselves could not be thought of as ‘sheep’ at all. Through this word Christ not only shows what they will be but, even more, refers it to God’s secret election, in that we are already God’s ‘sheep’ before we are aware that Christ is our ‘shepherd,’ just as elsewhere we are called ‘enemies’ (see Romans 5:10), even when Christ loved us. This is why Paul also say that we were known by God before we knew him (see Galatians 4:9).” (John Calvin: The Crossway Classic Commentaries, p.259, emphasis mine)
Calvin adds: “‘I must bring them also.’ Christ means that God’s election will be certain, and no one will perish whom he wishes to be saved. The hidden purpose of God, by which men were ordained to life, is at length manifested in his own time by the calling. And that calling is effectual, for Christ regenerates by his Spirit, to be his sons, those who were previously born of flesh and blood.” (John Calvin: The Crossway Classic Commentaries, p.259, emphasis mine)
Calvin is presumptuous in inferring Preemptive Regeneration. Jesus brings them in the sense of drawing them. Recall that Jesus states: “And I, if I am lifted up from the earth, will draw all men to Myself.” (John 12:32) This refers to the worldwide ministry of the Gospel in which Jewish and Gentile believers will be combined into one flock.