In order to go to the wedding of the Lamb, we need the wedding dress (the robe of the righteousness) which is written in Isaiah 61:10. We can not go to the wedding with the salvation garment only.
I will greatly rejoice in the Lord, my soul shall be joyful in my God; For He has clothed me with the garments of salvation, He has covered me with the robe of righteousness, as a bridegroom decks himself with ornaments, and as a bride adorns herself with her jewels. (Isaiah 61:10 NKJV)
In order to get the robe of righteousness, we have to live in righteousness. In Rev 19:8, the fine linen(the wedding dress) is the righteous act. Garment of salvation is freely given whoever believe in Jesus and whose sins are forgiven. For the robe of righteousness, we have to walk hard.
After we get the robe of righteousness, we have to keep it in good condition. Sins make it dirty. So we have to repent right away whenever we sins. We also make an effort not to sins anymore.
Pastor Na has seen many robes but not many people have worn it. She saw only several people who wore the robes out of thousands people gathering Christian meeting. We have to pursue to get this robe of righteousness. We have to live in holiness and righteousness. Whenever we sin, we have to repent right away. We also have to abandon the sinful life. We have to focus to pray, worship, evangelism and serving the church with fully obedience to Jesus.