As many as I love, I rebuke and chasten - Of course, only on the supposition that they deserve it. The meaning is, that it is a proof of love on his part, if his professed friends go astray, to recall them by admonitions and by trials. So a father calls back his children who are disobedient; and there is no higher proof of his love than when, with great pain to himself, he administers such chastisement as shall save his child. See the sentiment here expressed fully explained in the notes on Hebrews 12:6. The language is taken from Proverbs 3:12.
Be zealous therefore, and repent - Be earnest, strenuous, ardent in your purpose to exercise true repentance, and to turn from the error of your ways. Lose no time; spare no labor, that you may obtain such a state of mind that it shall not be necessary to bring upon you the severe discipline which always comes on those who continue lukewarm in religion. The truth taught here is, that when the professed followers of Christ have become lukewarm in his service, they should lose no time in returning to him, anti seeking his favor again. As sure as he has any true love for them, if this is not done he will bring upon them some heavy calamity, alike to rebuke them for their errors, and to recover them to himself.

As many as I love - So it was the love he still had to them that induced him thus to reprehend and thus to counsel them.
Be zealous - Be in earnest, to get your souls saved, They had no zeal; this was their bane. He now stirs them up to diligence in the use of the means of grace and repentance for their past sins and remissness.

As many as I love, I rebuke and chasten: be (k) zealous therefore, and repent.
(k) Zeal is set against those who are neither hot nor cold.

As many as I love I rebuke and chasten,.... The persons the objects of Christ's love here intended are not angels, but the sons of men; and these not all of them, yet many of them, even all who are his own by his Father's gift and his own purchase; and who are called his church, and sometimes represented as such who love him and obey his commands: the instances of his love to them are many; as his suretyship engagements for them, his assumption of their nature, dying in their room and stead, paying their debts, procuring their peace and pardon, bringing in a righteousness for them, purchasing their persons, his intercession for them, preparations in heaven, supplies of grace, and frequent visits in a kind and familiar manner; and as for the nature of his love, it is free and sovereign, everlasting and immutable, and it is matchless and inconceivable, it is strong and affectionate, and as his Father loved him; and such are rebuked by Christ, not in a way of wrath, but in a tender manner, in order to bring them under a conviction of their sin and of their duty, and of their folly in trusting in, or loving any creature more than himself, and of all their wrong ways; and they are chastened by him, not in a vindictive, but in a fatherly way, which is instructive and teaching to them, and for their good. This seems to refer to some afflictions which Christ was about to bring upon this church, by some means or another, to awaken her out of her sloth and security, and which would be in love to her, and the end be to rouse her zeal and bring her to repentance. Some think this respects the Gog and Magog army, which will encompass the camp of the saints, and the beloved city; but that will not be till after the thousand years' reign, and besides will be no affliction to them; rather it designs the unchurching them, signified by spewing them out of his mouth, Revelation 3:16,
be zealous, therefore, and repent; zeal was what was wanting in this church; which is nothing else than hot, fervent, and ardent love, love in a flame; whereas she was neither cold nor hot, but lukewarm, Christ would have her be "zealous" for God; for his cause and interest, for his Gospel, ordinances, and the discipline of his house, and against everything that is evil; against all false worship, all errors in doctrine, all sin and iniquity; and to be zealous of good works, and in the worship of God, both private and public: and "repent"; in an evangelical way, of her lukewarnmess, remissness, and supineness; of her pride, arrogance, and vain boastings of herself; and of her self-sufficience, self-dependence, and self-confidence.

(Job 5:17; Proverbs 3:11-12; Hebrews 12:5-6.) So in the case of Manasseh (2-Chronicles 33:11-13).
As many--All. "He scourgeth every son whom He receiveth. And shalt thou be an exception? If excepted from suffering the scourge, thou art excepted from the number of the sons" [AUGUSTINE]. This is an encouragement to Laodicea not to despair, but to regard the rebuke as a token for good, if she profit by it.
I love--Greek, "philo," the love of gratuitous affection, independent of any grounds for esteem in the object loved. But in the case of Philadelphia (Revelation 3:9), "I have loved thee" (Greek, "egapesa") with the love of esteem, founded on the judgment. Compare the note in my English Gnomon of BENGEL, John 21:15-17.
I rebuke--The "I" in the Greek stands first in the sentence emphatically. I in My dealings, so altogether unlike man's, in the case of all whom I love, rebuke. The Greek, "elencho," is the same verb as in John 16:8, "(the Holy Ghost) will convince (rebuke unto conviction) the world of sin."
chasten--"chastise." The Greek, "paideu," which in classical Greek means to instruct, in the New Testament means to instruct by chastisement (Hebrews 12:5-6). David was rebuked unto conviction, when he cried, "I have sinned against the Lord"; the chastening followed when his child was taken from him (2-Samuel 12:13-14). In the divine chastening, the sinner at one and the same time winces under the rod and learns righteousness.
be zealous--habitually. Present tense in the Greek, of a lifelong course of zeal. The opposite of "lukewarm." The Greek by alliteration marks this: Laodicea had not been "hot" (Greek, "zestos"), she is therefore urged to "be zealous" (Greek, "zeleue"): both are derived from the same verb, Greek, "zeo," "to boil."
repent--Greek aorist: of an act to be once for all done, and done at once.

Whomsoever I love - Even thee, thou poor Laodicean! O how much has his unwearied love to do! I rebuke - For what is past. And chasten - That they may amend for the time to come.