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 said to him, "Why has my lord spoken according to these words? Far be it from your servants to do such a thing!
But he said, "Far be it from me to do this! The man in whose hand the cup was found, he will become my slave. But as for you, go up in peace to your father."
May it never be! But let God be true but every human being a liar, just as it is written, "In order that you may be justified in your words, and may prevail when you are judged."