This word is also translated “lizard”. No matter because both spiders & lizards are useful to the king because they eat bugs, mosquitoes & other annoying little things. The message is taht if we are useful to those in leadership & deal with little annoying problems really well, even if we are not that well equipped, or significant, we will find ourselves in the company of the most powerful in the land.
The basis for leadership & influence is problem solving. When we help Jesus with His vision to build His people, His church we will be in His throne room.