'Reward' in the Bible

Moreover, by them Your servant is warned;In keeping them there is great reward.

And men will say, “Surely there is a reward for the righteous;Surely there is a God who judges on earth!”

Let this be the reward of my accusers from the Lord,And of those who speak evil against my soul.

Behold, children are a gift of the Lord,The fruit of the womb is a reward.