1 Peter 2:25

For ye were as sheep going astray
This is a proof of their being healed, namely, their conversion; in which an application of the blood of Christ, and pardon, and so healing by it, was made to their souls. The apostle has still in view the prophecy of ( Isaiah 53:6 ) . God's elect are sheep before conversion; not that they have the agreeable properties of sheep, as to be meek, harmless, innocent, clean, and profitable, for they are the reverse of all this; nor can some things be said of them before conversion, as may be after, as that they hear Christ's voice, and follow him; nor are they so called, because unprejudiced against, and predisposed unto the Gospel, for the contrary is true of them; but they are so in electing grace, and were so considered in the Father's gift of them to Christ, and when made his care and charge, and hence they are called the sheep of his hand; and when Christ laid down his life, and rose again, which he did for the sheep, and as the great Shepherd of them; and when called by grace, for their being sheep, and Christ's own sheep by the Father's gift, and his own purpose, is the reason why he looks them up, calls them by name, and returns them: but then they are not yet of his fold; they are lost sheep, lost in Adam, and by his fall, and by their own actual transgressions; they are as sheep going astray from the shepherd, and from the flock, going out of the right way, and in their own ways; and are, like sheep, stupid and insensible of their danger; and as they never return of themselves, until they are sought for, and brought back: hence it follows,

but are now returned;
not returned themselves, but were returned by powerful and efficacious grace: saints are passive, and not active in first conversion; they are turned, not by the power of their own free will, but by the power of God's free grace; they are returned under the illuminations and quickenings of the blessed Spirit, and through the efficacious drawings of the Father's love, unto Christ:

unto the Shepherd and Bishop of your souls;
by whom Christ is meant, who bears the office of a Shepherd, and fully performs it by feeding his sheep, providing a good fold and pasture for them; by gathering the lambs in his arms, and gently leading those that are with young; by healing their diseases, and preserving them from beasts of prey; hence he is called the good, the great, and chief Shepherd: and he is the "Bishop" or "Overseer" of the souls of his people, though not to the exclusion of their bodies: he has took the oversight of them willingly, and looks well to his flock, inspects into their cases, and often visits them, and never forsakes them; nor will he leave them till they receive the end of their faith, the salvation of their souls; which he has undertook and effected by his obedience, sufferings and death. Philo the Jew ^F12 observes, that

``to be a shepherd is so good a work, that it is not only a title given to kings and wise men, and souls perfectly purified, but to God the governor of all---who, as a Shepherd and King, leads according to justice and law, setting over them his right Logos, "the first begotten Son", who has taken the care of this holy flock, as does the deputy of a great king.''