The inevitable fate of the sinner stands in direct contrast to the reward awaiting the righteous [רש״י]. There is a deep significance to the double emphasis placed on the wickedness of the sinner. On a simple level, this repetition serves as a direct description of his character [אבן עזרא], or a straightforward declaration that his future will be filled with hardship [שד״ל]. However, the primary approach among commentators finds a profound moral distinction in this concept [רש״י, רד״ק]. A deeply wicked individual does not merely commit an isolated wrong; rather, his actions cause damage on two fronts simultaneously. He acts wrongfully toward God and acts wrongfully toward his fellow human beings. By doing so, he brings ruin to both himself and the world around him. This describes someone firmly entrenched in his destructive path, actively refusing to turn back and repent [מצודת דוד, רד״ק].
Regarding the nature of his punishment, the consequences are already prepared and waiting for him [שטיינזלץ]. He will ultimately face the full measure of his actions, whether in this lifetime or in the world to come [רד״ק]. Taking a unique perspective, [מלבי״ם] emphasizes that this disaster does not arrive as an external force or an arbitrary decree from God. Instead, the wicked person is the very source of his own ruin. His punishment is the direct, natural, and destructive outcome of the deeds he crafted with his own hands. Ultimately, the evil he creates is exactly what consumes him.
Furthermore, there is a fundamental difference in how good and bad actions ripple through the world. Good deeds naturally produce continuous, lasting benefits. Sins, on the other hand, generally do not yield ongoing results. The punishment is delivered simply for the act itself, unless a specific sin creates a tangible, negative reality in the world that continues to exist and cause harm [רד״ק].