'Known' in the Bible

let it be known to the king that the Jews who came up from you have come to us at Jerusalem; they are rebuilding the rebellious and evil city and are finishing the walls and repairing the foundations.

Now let it be known to the king, that if that city is rebuilt and the walls are finished, they will not pay tribute, custom or toll, and it will damage the revenue of the kings.

Let it be known to the king that we have gone to the province of Judah, to the house of the great God, which is being built with huge stones, and beams are being laid in the walls; and this work is going on with great care and is succeeding in their hands.