'Face to face' in the Bible

Face to face hath Jehovah spoken with you, in the mount, out of the midst of the fire;

And Gideon seeth that He is a messenger of Jehovah, and Gideon saith, 'Alas, Lord Jehovah! because that I have seen a messenger of Jehovah face to face!'

And I have brought you in unto the wilderness of the peoples, And have been judged with you there face to face.

unto whom I answered, that it is not a custom of Romans to make a favour of any man to die, before that he who is accused may have the accusers face to face, and may receive place of defence in regard to the charge laid against him.

for we see now through a mirror obscurely, and then face to face; now I know in part, and then I shall fully know, as also I was known;