Verse 16. - Repent therefore; or else I come to thee quickly (see on ver. 5). Some take "in like manner" with this verse: "In like manner (as Ephesus) repent therefore;" but this is not probable. Repent of having allowed some members to follow the examples of Balaam and of the Nicolaitans. With the sword of my mouth (comp. Revelation 1:16 and Revelation 2:12). It is possible that there is here another allusion to Balaam. It was with a drawn sword that the angel of the Lord withstood him (Numbers 22:23), and with the sword that he was slain (Numbers 31:8; Joshua 13:22). Those who follow Balaam in his sin shall follow him in his punishment; and the Church which allows such things will have to suffer along with those who commit them (comp. 2 Thessalonians 2:8).

2:12-17 The word of God is a sword, able to slay both sin and sinners. It turns and cuts every way; but the believer need not fear this sword; yet this confidence cannot be supported without steady obedience. As our Lord notices all the advantages and opportunities we have for duty in the places where we dwell, so he notices our temptations and discouragements from the same causes. In a situation of trials, the church of Pergamos had not denied the faith, either by open apostacy, or by giving way so as to avoid the cross. Christ commends their stedfastness, but reproves their sinful failures. A wrong view of gospel doctrine and Christian liberty, was a root of bitterness from which evil practices grew. Repentance is the duty of churches and bodies of men, as well as of particular persons; those who sin together, should repent together. Here is the promise of favour to those that overcome. The influences and comforts of the Spirit of Christ, come down from heaven into the soul, for its support. This is hidden from the rest of the world. The new name is the name of adoption; when the Holy Spirit shows his own work in the believer's soul, this new name and its real import are understood by him.Repent,.... This is said to those who were truly godly in those times, but still retained their communion with these corrupt men, and had not, as yet, separated from then; nor had they protested against these evil doctrines and practices, at least but very coldly, and had too much connived at them; and therefore are called upon to repent of their lukewarmness, negligence, and sinful compliances:

or else I will come unto thee quickly: in a providential way, to rebuke and chastise for such remissness, indifference, and evil communication:

and will fight against them with the sword of my mouth; of this sword; see Gill on Revelation 1:16. And it is observable, that Christ does not say, "I will fight against thee"; the true members of his mystical body, though lax and supine, for Christ does not fight against his people, but for them; but he says, "and will fight against them"; the Balaamites and Nicolaitans, for their idolatry and uncleanness.