'Yet' in the Bible

If anyone thinks he really knows something, he has not yet learned it as he ought to know it.

yet for us there is only one God, the Father, from whom everything came into being and for whom we live. And there is only one Lord, Jesus the Messiah, through whom everything came into being and through whom we live.

For just as the body is one and yet has many parts, and all the parts of the body, though many, form a single body, so it is with the Messiah.

There are, I suppose, many different languages in the world, yet none of them is without meaning.