'Uttermost' in the Bible

But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.

For so hath the Lord commanded us,'saying , I have set thee for a light of the Gentiles, That thou shouldest be for salvation unto the uttermost part of the earth.

And when Felix heard these things, having more perfect knowledge of that way, he deferred them, and said, When Lysias the chief captain shall come down, I will know the uttermost of your matter.