'Reward' in the Bible

Rejoice in that day, and leap for joy : for behold, your reward is great in heaven; for in the same manner did their fathers unto the prophets.

But love your enemies, and do them good, and lend, never despairing; and your reward shall be great, and ye shall be sons of the Most High: for he is kind toward the unthankful and evil.

And we indeed justly; for we receive the due reward of our deeds: but this man hath done nothing amiss.