Apocalypse Revealed # 288
288. Saying with a loud voice, "Worthy is the Lamb who was slain to receive power and riches and wisdom, and... honor and glory." (5:12) This symbolizes a confession from the heart that to the Lord in His Divine humanity belong omnipotence, omniscience, Divine good and Divine truth.
Saying in a loud voice symbolizes a confession from the heart. "You are worthy" means, symbolically, that in the Lord are the qualities that follow. The Lamb symbolizes the Lord in respect to His Divine Humanity. Power means, symbolically, Divine power, which is omnipotence. Riches and wisdom symbolize Divine knowledge and wisdom, which are omniscience. Honor and glory symbolizes Divine good and Divine truth.
It may be seen in no. 206 above that riches symbolize concepts of goodness and truth and thus knowledge, and therefore when said of the Lord, omniscience. And in no. 249 above, that honor and glory, when said of the Lord, symbolize His Divine goodness and Divine truth.