Galatians 4:21 YLT

¹⁹  my little children, of whom again I travail in birth, till Christ may be formed in you,

²⁰  and I was wishing to be present with you now, and to change my voice, because I am in doubt about you.

²¹  Tell me, ye who are willing to be under law, the law do ye not hear?

²²  for it hath been written, that Abraham had two sons, one by the maid-servant, and one by the free-woman,

²³  but he who 'is' of the maid-servant, according to flesh hath been, and he who 'is' of the free-woman, through the promise;