Who gave Jacob for a spoil, and Israel to the robbers? did not the LORD, he against whom we have sinned? for they would not walk in his ways, neither were they obedient unto his law.
Who gave Jacob for a spoil? Their calamity was not the work of chance, but God's immediate act for their sins.
Jacob ... Israel ... we - change from the third to the first person. Isaiah first speaking to them and of them as a prophet, distinct from them: then identifying himself with them, and acknowledging His share in the nation's sins (cf. Joshua 5:1).