Galatians 4:27 YLT

²⁵  for this Hagar is mount Sinai in Arabia, and doth correspond to the Jerusalem that now 'is', and is in servitude with her children,

²⁶  and the Jerusalem above is the free-woman, which is mother of us all,

²⁷  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.'

²⁸  And we, brethren, as Isaac, are children of promise,

²⁹  but as then he who was born according to the flesh did persecute him according to the spirit, so also now;