Galatians 4:29-31

Young's Literal Translation

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

³⁰ 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;'

³¹ then, brethren, we are not a maid-servant's children, but the free-woman's.