Sin is not weakness, it is a disease; it is red-handed rebellion against God and the magnitude of that rebellion is expressed by Calvary's cross.

If thou wilt fly from God, the devil will lend thee both spurs and a horse.

Nobody who understands the free grace of God takes sin lightly.

We might say God's wrath is His justice in action, rendering to everyone his just due, which, because of our sin is always judgment.