Why do sir ector and then the barons ask arthur to pull the sword out again and again?

Sir Ector and the barons repeatedly ask Arthur to pull the sWord from the stone to test his legitimacy as the rightful king of England. The sWord symbolizes divine right and true nobility, and they want to confirm whether Arthur is indeed the prophesied ruler. Each attempt serves to validate Arthur's claim and demonstrate his unique destiny, as the sWord can only be drawn by the true king. Their insistence reflects the uncertainty and skepticism surrounding Arthur's identity and potential to lead.