'Far' in the Bible

Then David the king went in, and sat before Jehovah; and he said, Who am I, O Lord Jehovah, and what is my house, that thou hast brought me thus far?

And Joab answered and said, Far be it, far be it from me, that I should swallow up or destroy.

And he said, Be it far from me, O Jehovah, that I should do this:'shall I drink the blood of the men that went in jeopardy of their lives? therefore he would not drink it. These things did the three mighty men.