NET
44 Then the king said to Shimei, “You are well aware of the way you mistreated my father David. The Lord will punish you for what you did.
Darby
44 And the king said to Shimei, Thou knowest all the wickedness of which thy heart is conscious, which thou didst to David my father; and Jehovah returns thy wickedness upon thine own head;
KJV
44 The king said moreover to Shimei, Thou knowest all the wickedness which thine heart is privy to, that thou didst to David my father: therefore the LORD shall return thy wickedness upon thine own head;