I know thy works - See the notes on Revelation 2:2. He knew all they had done, good and bad.
And charity - Love; love to God, and love to man. There is no reason for restricting this word here to the comparatively narrow sense which it now bears. Compare the notes on 1-Corinthians 13:1.
And service - Greek, "ministry" - διακονίαν diakonian. The word would seem to include all the service which the church had rendered in the cause of religion; all which was the proper fruit of love, or which would be a carrying out of the principles of love to God and man.
And faith - Or, fidelity in the cause of the Redeemer. The word here would include not only trust in Christ for salvation, but what is the proper result of such trust - fidelity in his service.
And thy patience - Patient endurance of the sorrows of life - of all that God brought upon them in any way, to test the reality of their religion.
And thy works - Thy works as the fruit of the virtues just mentioned. The word is repeated here, from the first part of the verse, perhaps to specify more particularly that their works had been recently more numerous and praiseworthy even than they had formerly been. In the beginning of the verse, as in the commencement of each of the epistles, the word is used, in the most general sense, to denote all that they had done; meaning that he had so thorough an acquaintance with them in all respects that he could judge of their character. In the latter part of the verse the word seems to be used in a more specific sense, as referring to good works, and with a view to say that they had latterly abounded in these more than they had formerly.
And the last to be more than the first - Those which had been recently performed were more numerous, and more commendable, than those which had been rendered "formerly." That is, they were making progress; they had been acting more and more in accordance with the nature and claims of the Christian profession. This is a most honorable commendation, and one which every Christian, and every church, should seek. Religion in the soul, and in a community, is designed to be progressive; and while we should seek to live in such a manner always that we may have the commendation of the Saviour, we should regard it as a thing to be greatly desired that we may be approved as making advances in knowledge and holiness; that as we grow in years we may grow alike in the disposition to do good, and in the ability to do it; that as we gain in experience, we may also gain in a readiness to apply the results of our experience in promoting the cause of religion. He would deserve little commendation in religion who should be merely stationary; he alone properly develops the nature of true piety, and shows that it has set up its reign in the soul, who is constantly making advances.

I know thy works - And of these he first sets forth their charity, την αγαπην, their love to God and each other; and particularly to the poor and distressed: and hence followed their faith, την πιστιν, their fidelity, to the grace they had received; and service, την διακονιαν, and ministration; properly pious and benevolent service to widows, orphans, and the poor in general.
And thy patience - Την ὑπομονην σου· Thy perseverance under afflictions and persecutions, and thy continuance in well-doing. I put faith before service according to the general consent of the best MSS. and versions.
Thy works - The continued labor of love, and thorough obedience.
The last to be more than the first - They not only retained what they had received at first, but grew in grace, and in the knowledge and love of Jesus Christ. This is a rare thing in most Christian Churches: they generally lose the power of religion, and rest in the forms of worship; and it requires a powerful revival to bring them to such a state that their last works shall be more than their first.

I know (19) thy works, and charity, and (i) service, and faith, and thy patience, and thy works; and the last [to be] more than the first.
(19) The note of praise is in this verse, and in (Revelation 2:20) reprehension, for they tolerated with them the doctrine of unrighteousness and ungodliness. In (Revelation 2:21), though they were called back to God, they did not repent. To this he adds even stronger threats and in (Revelation 3:2-5) he gives a conditional promise and an exhortation to hold fast the truth
(i) So he calls those offices of charity which are done to the saints.

I know thy works,.... Good works, as appears from the particular enumeration of them afterwards, and the commendation of proficiency in them, the last being more than the first, and the distinction from the evil ones in Revelation 2:20; this is said to the faithful followers and professors of Christ in this interval:
and charity; by which is meant not a relieving the wants of the poor; much less such a charity as connives at the errors and heresies of men; but the divine grace of love to God nod Christ, and the saints, without which a profession of religion is a vain thing; and, generally speaking, this grace is most in exercise in a time of trouble and persecution:
and service; or "ministry", meaning either the ministry of the word, which was exercised by many with great zeal, diligence, and faithfulness, as by Wickliff, John Huss, Jerom of Prague, and others; or the ministering to the necessities of the poor saints, as an evidence of their charity or love; or else the service of God is here intended, which is but reasonable, and is his due, and ought to be performed to him only, and that with fear and fervency, in faith, and with a pure conscience, with humility, and without mercenary views, and in righteousness and true holiness; or the service of love which the saints perform to one another, as praying for one another, bearing one another's burdens, admonishing and reproving for sin, restoring such as are gone astray, comforting the distressed, building up one another in their most holy faith, and exhorting and stirring up each other to the duties of religion:
and faith; not the doctrine of faith, as preached by the ministers of the word, and held and maintained by the true professors of it; but either the grace of faith, or the profession of both; or rather the faithfulness, both of the ministers and private believers of those times, as the Waldenses and Albigenses, the Lollards and Wickliffites, who abode by, and were faithful to the light which they had received:
and thy patience; in suffering for the sake of Christ and the Gospel: and very much it was they did endure, and yet held out to the end:
and thy works, and the last to be more than the first; that is, that their works or acts of love to God and Christ and one another, and of service to God and to the saints, and of faith and faithfulness in the cause of God, and of patience in suffering for the Gospel of Christ, were more in quantity, and greater in quality, toward the close of this period, which brought on the Reformation, than at the beginning of it; and which were done by the persons before mentioned, and by others.

The oldest manuscripts transpose the English Version order, and read, "faith and service." The four are subordinate to "thy works"; thus, "I know thy works, even the love and the faith (these two forming one pair, as 'faith works by love,' Galatians 5:6), and the service (ministration to the suffering members of the Church, and to all in spiritual or temporal need), and the endurance of (that is, shown by) thee (this pronoun belongs to all four)." As love is inward, so service is its outward manifestation. Similarly, faith and persevering endurance, or "patient continuance (the same Greek as here, Romans 2:7) in well-doing," are connected.
and thy works; and the last--Omit the second "and," with the three oldest manuscripts and the ancient versions; translate, "And (I know) thy works which are last (to be) more in number than the first"; realizing 1-Thessalonians 4:1; the converse of Matthew 12:45; 2-Peter 2:20. Instead of retrograding from "the first works" and "first love," as Ephesus, Thyatira's last works exceeded her first (Revelation 2:4-5).

I know thy love - How different a character is this from that of the angel of the church at Ephesus! The latter could not bear the wicked, and hated the works of the Nicolaitans; but had left his first love and first works. The former retained his first love, and had more and more works, but did bear the wicked, did not withstand them with becoming vehemence. Mixed characters both; yet the latter, not the former, is reproved for his fall, and commanded to repent. And faith, and thy service, and patience - Love is shown, exercised, and improved by serving God and our neighbour; so is faith by patience and good works.