This image speaks to me of the Bride's preparation for the greatest wedding ever that will kick off the rest of Eternity.
"Let us rejoice and shout for joy [exulting and triumphant]! Let us celebrate and ascribe to Him glory and honor, for the marriage of the Lamb [at last] has come, and His bride has prepared herself.
She has been permitted to dress in fine (radiant) linen, dazzling and white—for the fine linen is (signifies, represents) the righteousness (the upright, just, and godly living, deeds, and conduct, and right standing with God) of the saints (God’s holy people)."
Rev 19:7-8 Amplified