John 10:16

And other sheep I have
Not distinct from those for whom he laid down his life, but from those who were under the Old Testament dispensation, and who heard not the thieves and robbers that were before Christ, ( John 10:8 ) ; others besides the lost sheep of the house of Israel, or the elect among the Jews, to whom Christ was sent; and by whom are meant the chosen of God among the Gentiles, who were sheep, though not called and folded, for the reasons given: (See Gill on John 10:3). These, though uncalled, belonged to Christ; he had an interest in them, they were given him by his Father; he had them in his hands, and upon his heart; his eye was upon them, and they were under his notice, inspection, and care:

which are not of this fold,
of the Jewish nation and church, being aliens from the commonwealth of Israel, and strangers to the covenants of promise; were as sheep going astray, and were scattered about in the several parts of the world; and were to be redeemed out of every kindred, tongue, people, and nation:

them also I must bring;
out of the wilderness of the world, from among the men of it, their former sinful compassions, from the folds of sin and Satan, and the pastures of their own righteousness; to himself, and into his Father's presence, to his house and ordinances, to a good fold and green pastures, and at last to his heavenly kingdom and glory: and there was a necessity of doing all this, partly on account of his Father's will and pleasure, his purposes and decrees, who had resolved upon it; and partly on account of his own engagements, who had obliged himself to do it; as well as because of the case and condition of these sheep, who otherwise must have eternally perished:

and they shall hear my voice;
in the Gospel, not only externally, but internally; which is owing to his powerful and efficacious grace, who quickens them, and causes them to hear and live; unstops their deaf ears, and gives them ears to hear; and opens their hearts, to attend to his word, and gives them an understanding of it. The Arabic version reads this in connection with the preceding clause, thus, "and I must bring them also to hear my voice"; as well as the rest of the sheep among the Jews, and therefore the Gospel was sent among them:

and there shall be one fold, [and] one shepherd;
one church state, consisting both of Jews and Gentiles; the middle wall of partition being broke down, these two coalesce in one, become one new man, and members of one and the same body; for though there may be several visible Gospel churches, yet there is but one kind of church state, and one general assembly and church of the firstborn, one family to which they all belong; for what reasons a church is comparable to a fold, (See Gill on John 10:1). And over this fold, or flock, there is but one shepherd, Jesus Christ; who is the rightful proprietor, and whose own the sheep are; and who knows how to feed them, and does take care of them; though there are many under shepherds, whom he employs in feeding them; in the original text the copulative "and" is wanting, and the words stand thus, "one fold, one shepherd"; which not only expresses a peculiar elegance, but answers the proverb delivered in the same form; and to which agree the Arabic and Ethiopic versions, which render them, "and there", or "they shall be one fold of one shepherd"; or one flock which belongs to one shepherd only; see ( Ezekiel 34:23 ) ( 37:24 ) .