But let patience have her perfect work. As boldness and courage often appear in us and soon fail, he therefore requires perseverance. "Real patience," he says, "is that which endures to the end." For work here means the effort not only to overcome in one contest, but to persevere through life. His perfection may also he referred to the sincerity of the soul, that men ought willingly and not feignedly to submit to God; but as the word work is added, I prefer to explain it of constancy. For there are many, as we have said, who shew at first an heroic greatness, and shortly after grow weary and faint. He therefore bids those who would be perfect and entire, [1] to persevere to the end. But what he means by these two words, he afterwards explains of those who fail not, or become not wearied: for they, who being overcome as to patience, be broken down, must, by degrees, be necessarily weakened, and at length wholly fail.

Footnotes

1 - "Perfect, teleioi," fully grown, mature; "entire, holochlezoi," complete, no part wanting. The first refers to the maturity of grace; and the second to its completeness, no grace being wanting. They were to be like men full grown, and not maimed or mutilated, but having all their members complete.

But let patience have her perfect work - Let it be fairly developed; let it produce its appropriate effects without being hindered. Let it not be obstructed in its fair influence on the soul by murmurings, complaining, or rebellion. Patience under trials is fitted to produce important effects on the soul, and we are not to hinder them in any manner by a perverse spirit, or by opposition to the will of God. Every one who is afflicted should desire that the fair effects of affliction should be produced on his mind, or that there should be produced in his soul precisely the results which his trials are adapted to accomplish.
That ye may be perfect and entire - The meaning of this is explained in the following phrase - "wanting nothing;" that is, that there may be nothing lacking to complete your character. There may be the elements of a good character; there may be sound principles, but those principles may not be fully carried out so as to show what they are. Afflictions, perhaps more than anything else, will do this, and we should therefore allow them to do all that they are adapted to do in developing what is good in us. The idea here is, that it is desirable not only to have the elements or principles of piety in the soul, but to have them fairly carried out, so as to show what is their real tendency and value. Compare the notes at 1-Peter 1:7. On the word "perfect," as used in the Scriptures, see the notes at Job 1:1. The word rendered "entire" (ὁλόκληροι holoklēroi) means, whole in every part. Compare the notes at 1-Thessalonians 5:23. The word occurs only in these two places. The corresponding noun (ὁλοκληρία holoklēria) occurs in Acts 3:16, rendered "perfect soundness."
Wanting nothing - "Being left in nothing;" that is, everything being complete, or fully carried out.

Let patience have her perfect work - That is, Continue faithful, and your patience will be crowned with its full reward; for in this sense is εργον, which we translate work, to be understood. It is any effect produced by a cause, as interest from money, fruit from tillage, gain from labor, a reward for services performed; the perfect work is the full reward. See many examples in Kypke.
That ye may be perfect and entire - Τελειοι, Fully instructed, in every part of the doctrine of God, and in his whole will concerning you. Ὁλοκληροι, having all your parts, members, and portions; that ye may have every grace which constitutes the mind that was in Christ, so that your knowledge and holiness may be complete, and bear a proper proportion to each other. These expressions in their present application are by some thought to be borrowed from the Grecian games: the man was τελειος, perfect, who in any of the athletic exercises had got the victory; he was ὁλοκληρος, entire, having every thing complete, who had the victory in the pentathlon, in each of the five exercises. Of this use in the last term I do not recollect an example, and therefore think the expressions are borrowed from the sacrifices under the law. A victim was τελειος, perfect, that was perfectly sound, having no disease; it was ὁλοκληρος, entire, if it had all its members, having nothing redundant, nothing deficient. Be then to the Lord what he required his sacrifices to be; let your whole heart, your body, soul, and spirit, be sanctified to the Lord of hosts, that he may fill you with all his fullness.

(4) But let patience have [her] perfect work, that ye may be perfect and entire, wanting nothing.
(4) The third argument, proposed in manner of an exhortation, that true and lasting patience may be discerned from false and temporary. Affliction is the instrument God uses to polish and refine us. Therefore through the work and effect of afflictions, we are perfected in Christ.

But let patience have her perfect work,.... Or effect; or be brought unto perfection; which may denote both the sincerity and continuance of it unto the end, with constancy: patience may be said to be perfect, when it appears to be real and sincere, and not dissembled; for as there may be a feigned faith, a dissembled love, and an hypocritical hope, so likewise a mere show of patience: and certain it is, that as there is a patience which is commendable, there is one that is not, 1-Peter 2:20. And this phrase may also design the constant exercise of this grace to the end; for he that endures, or is patient, and continues so unto the end, shall be saved, and enjoy that perfection of glory and happiness expressed in the next clause:
that ye may be perfect and entire, wanting nothing; which cannot be understood of the saints in this present life; only as they are in Christ, and in a comparative sense; or as perfection may denote sincerity, and uprightness; or of a perfection of parts, but not of degrees; for the saints are very imperfect in themselves, and are very far from being complete in soul, body, and spirit; and want many things, and are wanting in many things, both in the exercise of grace, and in the discharge of duty; but when patience has had its perfect work, and has been tried to the uttermost, and is found right, and has held out to the end; then shall the saints be perfect in holiness and happiness, and be entire, whole, and complete; as they will be in the resurrection morn, both in soul and body, and will want no good thing, and will be free from every sorrow, nor will they be deficient in any service; and to this sense agrees James 1:12.

Let endurance have a perfect work (taken out of the previous "worketh patience" or endurance), that is, have its full effect, by showing the most perfect degree of endurance, namely, "joy in bearing the cross" [MENOCHIUS], and enduring to the end (Matthew 10:22) [CALVIN].
ye may be perfect--fully developed in all the attributes of a Christian character. For this there is required "joy" [BENGEL], as part of the "perfect work" of probation. The work of God in a man is the man. If God's teachings by patience have had a perfect work in you, you are perfect [ALFORD].
entire--that which has all its parts complete, wanting no integral part; 1-Thessalonians 5:23, "your whole (literally, 'entire') spirit, soul, and body"; as "perfect" implies without a blemish in its parts.

Let patience have its perfect work - Give it full scope, under whatever trials befal you. That ye may be perfect and entire - Adorned with every Christian grace. And wanting nothing - Which God requires in you.