Revelation 19 has much to say about Jesus Christ Himself and His accomplishments to end this age, bring in the next age, and open the door for New Jerusalem to come down out of heaven.
In verse 19:14, “The armies which are in heaven followed Him on white horses, dressed in fine linen, white and clean.” The white and clean garments indicate that these believers are approved by the Lord. These garments are not merely gifts to them. Rather, the garments manifest the believers inward condition and daily living.
This clean living includes the cleansing of our sins, and also the transformation of our inner being. The first is the forgiveness by Christ’s redemption (Eph. 1:7). The second is accomplished by the washing of regeneration and renewing of the Holy Spirit (Titus 3:5) and also the purifying of our souls by our obedience (1 Peter 1:22).
Forgiveness of sins is a necessary step in becoming part of New Jerusalem, but it is not the only step. We also need the renewing of our inner being to match the newness of New Jerusalem. This is the renewing of our mind by the Spirit in our spirit (Rom. 12:2, Eph. 4:23).
Those who are wearing white garments are on white horses. These match the white horse on which the Lord sits (v. 11). By the Spirit’s renewing, we are being renewed according to the Lord’s image (Col. 3:10), thus matching Him in many ways. We thereby become His expression now as the new man (Col. 3:10-11) and eternally as New Jerusalem.