Thematic Bible: Sends hagar and ishmael away

and she saith to Abraham, 'Cast out this handmaid and her son; for the son of this handmaid hath no possession with my son -- with Isaac.' And the thing is very wrong in the eyes of Abraham, for his son's sake; and God saith unto Abraham, 'Let it not be wrong in thine eyes because of the youth, and because of thy handmaid: all that Sarah saith unto thee -- hearken to her voice, for in Isaac is a seed called to thee. read more.
As to the son of the handmaid also, for a nation I set him, because he is thy seed.' And Abraham riseth early in the morning, and taketh bread, and a bottle of water, and giveth unto Hagar (placing it on her shoulder), also the lad, and sendeth her out; and she goeth on, and goeth astray in the wilderness of Beer-Sheba;

for it hath been written, that Abraham had two sons, one by the maid-servant, and one by the free-woman, but he who is of the maid-servant, according to flesh hath been, and he who is of the free-woman, through the promise; which things are allegorized, for these are the two covenants: one, indeed, from mount Sinai, to servitude bringing forth, which is Hagar; read more.
for this Hagar is mount Sinai in Arabia, and doth correspond to the Jerusalem that now is, and is in servitude with her children, and the Jerusalem above is the free-woman, which is mother of us all, for it hath been written, 'Rejoice, O barren, who art not bearing; break forth and cry, thou who art not travailing, because many are the children of the desolate -- more than of her having the husband.' And we, brethren, as Isaac, are children of promise, but as then he who was born according to the flesh did persecute him according to the spirit, so also now; but what saith the Writing? 'Cast forth the maid-servant and her son, for the son of the maid-servant may not be heir with the son of the free-woman;'