'Know' in the Bible

Of the tribe of Issachar, men who understood the times, with knowledge of what Israel should do, two hundred chiefs; and all their relatives were at their command;

What more can David say to You for the honor granted to Your servant? For You know Your servant.

So David said to Joab and the leaders of the people, “Go, count Israel from Beersheba to Dan, and bring me their total, so that I may know it.”

“As for you, Solomon my son, know the God of your father [have personal knowledge of Him, be acquainted with, and understand Him; appreciate, heed, and cherish Him] and serve Him with a blameless heart and a willing mind; for the Lord searches all hearts and minds, and understands every intent and inclination of the thoughts. If you seek Him [inquiring for and of Him and requiring Him as your first and vital necessity] He will let you find Him; but if you abandon (turn away from) Him, He will reject you forever.

I know also, my God, that You test the heart and delight in uprightness and integrity. In the uprightness of my heart I have willingly offered all these things. So now with joy I have seen Your people who are present here, make their offerings willingly and freely to You.