'Knowledge' in the Bible

The Lord will bring back his own blood on his head because he struck down two men more righteous and better than he, without my father David’s knowledge. With his sword, Joab murdered Abner son of Ner, commander of Israel’s army, and Amasa son of Jether, commander of Judah’s army.

He was a widow’s son from the tribe of Naphtali, and his father was a man of Tyre, a bronze craftsman. Hiram had great skill, understanding, and knowledge to do every kind of bronze work. So he came to King Solomon and carried out all his work.