What did Jesus mean when he said "You shall be perfect, just as your father in heaven is perfect Matt 4:48?

Well look at it this way... God made us in his image... and we are not perfect... there for he is not perfect... do u honestly think some of his choices were the best choice? for example when he "flooded the world". but that never happened... it was probably only a small part of the world that flooded... possibly like a mini tsunami or something...