This is an unhappy expression, bringing in the name of God where it does not occur. In the O.T. it is chalilah, 'far be it.' Ge 44:7,17, etc. In the N.T. ?? ???????, 'let it not be.' Ro 3:4,6,31, etc.
and they say unto him, 'Why doth my lord speak according to these words? far be it from thy servants to do according to this word;
and he saith, 'Far be it from me to do this; the man in whose hand the cup hath been found, he becometh my servant; and ye, go ye up in peace unto your father.'
let it not be! and let God become true, and every man false, according as it hath been written, 'That Thou mayest be declared righteous in Thy words, and mayest overcome in Thy being judged.'
let it not be! since how shall God judge the world?
Law then do we make useless through the faith? let it not be! yea, we do establish law.