Sam didn't know about the statue. So he decided to silently observe this group of warriors. Those monsters were coming in their direction while those Warriors were getting ready to fight the monsters.
Suddenly, those skeletons shoot them with their bone arrows. Instantly, all those spiritual Warriors use the light control technique to cast the light barrier in front of them. It prevents those arrows from reaching those warriors. But the skeletons just shoot those bone arrows nonstop. Previously, Sam also faced this type of skeleton many times, but he wasted no more time and quickly finished those skeletons. Because of this, he did not know that these skeletons could shoot non-stop arrows. Those skeletons just keep shooting their arrows nonstop toward that light barrier.