When that which is perfect is come "When the goal has been reached, then the helps in the race will be done away." He retains, however, the form of expression that he had already made use of, when he contrasts perfection with what is in part "Perfection," says he, "when it will arrive, will put an end to everything that aids imperfection." But when will that perfection come? It begins, indeed, at death, for then we put off, along with the body, many infirmities; but it will not be completely manifested until the day of judgment, as we shall hear presently. Hence we infer, that the whole of this discussion is ignorantly applied to the time that is intermediate.

But when that which is perfect is come - Does come; or shall come. This proposition is couched in a general form. It means that when anything which is perfect is seen or enjoyed, then that which is imperfect is forgotten, laid aside, or vanishes. Thus, in the full and perfect light of day, the imperfect and feeble light of the stars vanishes. The sense here is, that "in heaven" - a state of absolute perfection - that which is "in part," or which is imperfect, shall be lost in superior brightness. All imperfection will vanish. And all that we here possess that is obscure shall be lost in the superior and perfect glory of that eternal world. All our present unsatisfactory modes of obtaining knowledge shall be unknown. All shall be clear, bright, and eternal.

But when that which is perfect - The state of eternal blessedness; then that which is in part - that which is imperfect, shall be done away; the imperfect as well as the probationary state shall cease for ever.

But when that which is perfect is come,.... When perfect knowledge of God, of Christ, and of the mysteries of the kingdom of heaven shall take place; which will not in this life, but in that which is to come. So the Jews say (r) that at the resurrection, upon the reunion of the soul and body,
"the children of men shall attain to , "perfect knowledge";''
which is what the apostle refers to here:
and then that which is in part, shall be done away: the imperfection of knowledge shall be removed; the imperfect manner of communicating knowledge, and of receiving and acquiring it, will cease: thus the apostle explains what he means by the cessation and failing of knowledge, and prophecy; not that knowledge itself will be no more, and a state of ignorance and darkness succeed; but imperfect knowledge will vanish away, or rather will be perfected, or be swallowed up in perfect knowledge; the imperfection of it will disappear; and it will be no more taught and received in part; the whole of truth will be clearly known.
(r) Midrash Haneelam in Zohar in Genesis. fol. 69. 1.

that which is in part--fragmentary and isolated.

But when that which is perfect is come - At death and in the last day. That which is in part shall vanish away - Both that poor, low, imperfect, glimmering light, which is all the knowledge we now can attain to; and these slow and unsatisfactory methods of attaining, as well as of imparting it to others.