Gal. 4, 21-31.
Tell me, ye that would be under the law, have ye not heard the law? For it is written, that Abraham had two sons; the one of the bondwoman, and the other of the free woman. But he that was of the bondwoman was born according to the flesh: but he that was of the freewoman was born through the promise. The words mean something. For these are the two testaments, one from Mount Sinai, which is born unto bondage, which is the Agar. For Agar is the name of Mount Sinai in Arabia, and it reaches to Jerusalem, which is at this time, and is servant with its children. But the Jerusalem that is above is the free one, which is the mother of us all. For it is written, Be glad, thou barren that bearest not, and bring forth, and call, thou that conceivest not: for the lonely woman hath many more children than she that hath a husband. But we, brethren, according to Isaac, are children of promise: but as in those days he that was born after the flesh persecuted him that was born after the Spirit: so it is now also. But what does the Scripture say? Cast out the maid with her son: for the son of the maid shall not inherit with the son of the free. So then, brethren, we are not the children of the maid, but of the freewoman.
This epistle is abundantly deleted in my Comment or Interpretation on the Epistle to the Galatians, that it is not necessary to put it here, one may look for it there.
*) Called Lätare. D. Red.
and read; also whoever wants to read even richer understanding of the opinion of this epistle, let him read the postilion on the two epistles on the Sunday after Christmas Day and on the New Year's Day, there he will find everything, so that we do not write the same thing in vain in all places.