John Wesley on Joshua 9:23

Ye are cursed - You shall not escape the curse of God which by divine sentence belongs to all the Canaanites; but only change the quality of it, you shall feel that curse of bondage, which is proper to your race by virtue of that ancient decree, Gen 9:25. Bond - men - The slavery, which is upon you shall be entailed on your posterity. The house of my God - This only service they mention here, because it was their durable servitude, being first in the tabernacle, and then in the temple, whence they were called Nethinim, 1Chr 9:2 Ezra 2:43, whereas their servitude to the whole congregation in a great measure ceased when the Israelites were dispersed to their several habitations.