Facing the fleeting temptations and apparent success of the wicked, a person must often choose between false comfort and constructive criticism. King David expresses a clear preference for receiving harsh rebuke from an honest, righteous person over indulging in the luxuries of the wicked. While such a reprimand may feel like a severe physical blow, the primary approach among commentators is that it is ultimately an act of true kindness meant to straighten one's path. Alternatively, this interaction can be seen not as a blow, but as a calming process where the righteous person steadily settles grounding beliefs and truths into one's mind [מאירי].
This welcome correction is compared to fine, fragrant oil poured upon the head [רד״ק, ביאור שטיינזלץ, מאירי]. Rather than causing injury, the painful truth is received graciously and will never be turned away [רד״ק, מאירי]. Viewing this through the lens of leadership, the oil represents the anointing of kingship. In this light, the harsh but honest guidance of the righteous does not threaten a leader's crown. On the contrary, it secures his ongoing success, standing in sharp contrast to the destructive influence of evildoers [רש״י, אלשיך, מצודת דוד]. Conversely, a unique perspective suggests that the oil actually symbolizes the abundant wealth of the wicked, with David declaring that such material temptation will never break his resolve or lure him away [אבן עזרא].
Historically, this struggle takes shape during the moment David cuts off the corner of King Saul's robe. In this scenario, David acts as his own righteous critic, his conscience striking him for bringing disgrace upon Saul's garments. This internal rebuke serves as a vital reminder that the anointing oil has not yet been removed from Saul's head. Because Saul remains God's chosen king, he must not be harmed [מלבי״ם].
A continuous reliance on God shapes the entirety of a person's life. Constantly praying to be saved from the destructive actions of the wicked naturally prevents one from ever desiring their comforts [רש״י, רד״ק, מצודת דוד, ביאור שטיינזלץ]. Others understand this ongoing prayer as a plea for justice, asking that ruin befall the wicked themselves [אבן עזרא]. In the specific context of escaping Saul, this prayer highlights swift divine intervention; even as David cries out for rescue from his pursuers, God sends His help before the plea is fully spoken [מלבי״ם]. Taking a completely different approach, the prayer can be seen as a request to actually share in the hardships of the righteous, ensuring one is never lured away by the temporary prosperity of those who do evil [מאירי].