I delight greatly in the LORD; my soul rejoices in my God. For he has clothed me with garments of salvation and arrayed me in a robe of his righteousness, as a bridegroom adorns his head like a priest, and as a bride adorns herself with her jewels. Isaiah 61:10 NIV
Did you notice that we don’t have to clean ourselves up first? After all, our clothing is filthy (Isaiah 64:6). What is the clothing of salvation and robe of His righteousness mean? Our salvation comes from Christ. It is His perfect character that we are to wear. When we accept Christ as our Lord and Savior, we come to Him as we are. He cleans us up from the inside out. He places His robe of righteousness on us. We take on His character. We become changed, becoming more like Him.
Rather, clothe yourselves with the Lord Jesus Christ, and do not think about how to gratify the desires of the flesh. Romans 13:14 NIV