Robes are . . .
For Glory and Beauty:
And you shall make holy garments (LXX – στολήν) for Aaron your brother, for glory and for beauty. . . . that he may minister to Me as priest. (Exodus 28:2-3)
Symbolic of Salvation:
But the father said to his servants, ‘Bring out the best robe (στολή) and put it on him, and put a ring on his hand and sandals on his feet. And bring the fatted calf here and kill it, and let us eat and be merry; for this my son was dead and is alive again; he was lost and is found.’ (Luke 15:22-24)
Prophetic for Glorification and Theosis:
After these things I looked, and behold, a great multitude which no one could number, of all nations, tribes, peoples, and tongues, standing before the throne and before the Lamb, clothed with white robes (στολή), with palm branches in their hands, and crying out with a loud voice, saying, “Salvation belongs to our God who sits on the throne, and to the Lamb!” All the angels stood around the throne and the elders and the four living creatures, and fell on their faces before the throne and worshiped God . . . . “These are the ones who come out of the great tribulation, and washed their robes (στολή) and made them white in the blood of the Lamb. (Revelation 7:9-14)