Faith stands or falls on the truth that the future with God is more satisfying than the one promised by sin. Where this truth is embraced and God is cherished above all, the power of sin is broken. The power of sin is the power of deceit. Sin has power through promising a false future. In temptation sin comes to us and says: "The future with God on his narrow way is hard and unhappy, but the way I promise is pleasant and satisfying." The power of sin is in the power of this lie.
John PiperSatan's aim is to destroy our joy and trust and delight in God, and to make God look worthless in the world's eyes. Everytime someone forsakes God for the world, gets angry at God when part of the world is taken away from them, they highlight the world as valuable... and everytime someone stays with God, when the world is taken away, and praises God, they highlight the value and glory of God.
John PiperThe deepest need that you and I have in weakness and adversity is not quick relief, but the well-grounded confidence that what is happening to us is part of the greatest purpose of God in the universe - the glorification of the grace and power of his Son - the grace and power that bore Him to the cross and kept him there until the work of love was done.
John Piper