'Known' in the Bible

Which none of the princes of this world knew: for had they known it, they would not have crucified the Lord of glory.

For who hath known the mind of the Lord, that he may instruct him? But we have the mind of Christ.

But if any man love God, the same is known of him.

For now we see through a glass, darkly; but then face to face: now I know in part; but then shall I know even as also I am known.

And even things without life giving sound, whether pipe or harp, except they give a distinction in the sounds, how shall it be known what is piped or harped?

So likewise ye, except ye utter by the tongue words easy to be understood, how shall it be known what is spoken? for ye shall speak into the air.