This speaks of the people taking an oath and a curse as if the oath and the curse were a rope that physically bound them. Alternate translation: "swore themselves to an oath and a curse" or "they took an oath and called for a curse to come on themselves if they failed to keep it" (See: [[rc://en/ta/man/jit/figs-metaphor]])
This can be stated in active form. Alternate translation: "which Moses the servant of God had given to Israel" (See: [[rc://en/ta/man/jit/figs-activepassive]])