Apocalypse Revealed # 165
165. "'You have a few names even in Sardis.'" (3:4) This symbolically means that they also have among them some people who do have life in their worship.
A few names means, symbolically, some who are of such a character as now described, for a name symbolizes someone's character. That is because everyone in the spiritual world is named in accordance with his character (no. 81). The character of the people described now is that they have life in their worship.
Zechariah 3:3-5
3
Now Joshua was clothed with filthy garments, and stood before the angel.
4
And he answered and spake unto those that stood before him, saying, Take away the filthy garments from him. And unto him he said, Behold, I have caused thine iniquity to pass from thee, and I will clothe thee with change of raiment.
5
And I said, Let them set a fair mitre upon his head. So they set a fair mitre upon his head, and clothed him with garments. And the angel of the LORD stood by.