'Knowest' in the Bible

I have preached righteousness in the great congregation: lo, I have not refrained my lips, O LORD, thou knowest.

O God, thou knowest my foolishness; and my sins are not hid from thee.

Thou knowest my reproach, and my shame, and my dishonour: mine adversaries are all before thee.

To the Overseer. -- A Psalm by David. Jehovah, Thou hast searched me, and knowest.

Thou knowest my downsitting and mine uprising, thou understandest my thought afar off.

For there is not a word in my tongue, but, lo, O LORD, thou knowest it altogether.

Jehovah, what is man that Thou knowest him? Son of man, that Thou esteemest him?