In this parable Jesus teaches us about How (He) a man planted wheat (children of the Kingdom) in his field and an enemy (Satan) planted weeds/tares (people of his own). In the Harvest (end of times) the weeds will be put into the fire and the wheat will be taken into the Father's barn. 

As wheat we must persist in representing His kingdom and giving fruit all the while awaiting the harvest which guarantees our taken into the father's kingdom.