How do we know that sin is deceitful?

The deceitfulness of sin is evident in several ways: it often presents itself with seductive promises of immediate pleasure and gain while concealing the ultimate destructive consequences. For example, the entire narrative surrounding Eve in the Garden of Eden illustrates how sin can lead to questioning God's authority and judgment, introducing the fall of man through temptation. Sin does not come as a flagrant evil but often veils itself as something beneficial, leading individuals to rationalize disobedience to God, thinking they are pursuing good. This deceptive nature is crucial to recognize for true spiritual vigilance.