Romans 9:29

Said before — i.e., in an earlier part of his book. The Book of Isaiah was at this time collected in the form in which we have it. In Acts 13:33, we find an express reference to the present numbering of the Psalms — “It is also written in the second psalm, Thou art my Son, this day have I begotten thee.” (Some authorities read “first,” the two psalms being arranged as one, but “second” is probably the true reading.)

A seed. — Equivalent to the “remnant” of Romans 9:27. The point of the quotation is, that but for this remnant the rejection of Israel would have been utter and complete.