Romans 6:23

For the wages of sin is death; but the free gift of God is eternal life in Christ Jesus our Lord. [If consistency demands that you serve God with your whole heart, so profit and advantage also urges you so to do; for what profit had you when you served sin? In this present you were reaping, in that service, the things at which you may now well blush with shame, since they were preparing you to reap in the future death as a final harvest. But now having been made free from the slavery of sin, and having become a servant of God, your present reward is the blessedness and joy of a clean life, and your future reward is life eternal. And this is obvious, for, following my figure of slaves, masters and wages to the end, the wages which men earn and receive from your former master, sin, is death; but the wages which you can not earn, or deserve, but which God freely gives you for serving him, is eternal life in Christ Jesus our Lord.]