'Know' in the Bible

Therefore, I intend to keep on reminding you about these things, even though you already know them and are firmly established in the truth that you now have.

because I know that the removal of my bodily tent will come soon, as indeed our Lord Jesus, the Messiah, has shown me.

It would have been better for them not to have known the way of righteousness than to know it and turn their backs on the holy commandment that was committed to them.

And so, dear friends, since you already know these things, continuously be on your guard not to be carried away by the deception of lawless people. Otherwise, you may fall from your secure position.