What are the rewards of faithfulness?

The Bible mentions many rewards for faithfulness to God. One reward the Bible mentions is: --- Everlasting life in Paradise, right here on earth.
Psalm 37:11 states that 'the meek shall inherit the earth'; and that there shall be "an abundance of peace".
1 John 2:17 states: ". . . he that does the will of God - remains forever."
Proverbs 2:21 states: "For the upright are the ones that will reside in the earth, and the blameless are the ones that will be left over in it."
Those are some of the rewards of faithfulness to God's requirements ("does the will of God").

If you are asking about the rewards of faithfulness to your marriage mate; there are also rewards.
a) you have a clean conscience; never needing to worry about getting caught for adultery.
b) you are able to use your faithfulness as an example for your children; helping them to become better persons to their future marriage mate.
c) you would have the love and respect of your marriage mate; you don't normally have to worry about being given divorce papers.