The Shape of my Heart

I searched the word "reward" in my PC - Bible, and there are three verses I would like you to look at:

Matt 5,12 Rejoice and be glad, for your reward is great in heaven, for in the same way they persecuted the prophets who were before you. Matt 6,1 Beware of practicing your piety before others in order to be seen by them; for then you have no reward from your Father in heaven. Luk 6,23 Rejoice in that day and leap for joy, for surely your reward is great in heaven; for that is what their ancestors did to the prophets.