3. Romans 11 confuses me. Specifically, the words "all Israel" and "fullness."
4. The nature of the covenant made at Sinai is also something I wonder about. It certainly seems like a conditional covenant to me, with, in part, Canaan as the covenant blessing, exile as the curse. Of course, it's not that simple, and, in places, the covenant seems to be cut in terms of life and death, not just land or no land. Is this law covenant, which, though Piper doesn't seem to agree, seems to me to be very much conditional, an administration of the overarching construct of God's relationship to his chosen people known as the covenant of grace? If so, how can it be conditional if it deals with more than just Israel's inheritance of the Promised Land?