The curse here denounced by Joshua, is done away by the privilege the Gibeonites were brought into, as incorporated among God's heritage. Jesus hath redeemed both Israel and the Gentile church from the curse of the law, being made a curse for them. And if they were doomed to servitude, it was a service that is perfect freedom when employed in the house of God.
Related Commentaries of Joshua 9:22
Joshua 9:22-23
22 And Joshua called for them, and he spake unto them, saying, Wherefore have ye beguiled us, saying, We are very far from you; when ye dwell among us?
23 Now therefore ye are cursed, and there shall none of you be freed from being bondmen, and hewers of wood and drawers of water for the house of my God.