'Concerning' in the Bible

And all the king's servants, that were in the king's gate, bowed down, and did reverence to Haman; for the king had so commanded concerning him. But Mordecai bowed not down, nor did him reverence.

Wherefore they called these days Purim, after the name of Pur. Therefore because of all the words of this letter, and of that which they had seen concerning this matter, and that which had come unto them,