In a moment of deep vulnerability, David accepts his suffering with absolute submission, recognizing God's guiding hand in his tragic circumstances. The primary approach among commentators is that David uses the heartbreaking reality of his own family to make sense of his enemy's hostility, building a logical deduction rooted in faith. By pointing out that his own flesh and blood, his son, is actively trying to take his life, David highlights a complete shattering of the natural order. Under normal circumstances, a son loves and protects his father. The fact that this natural bond has been so violently broken proves to David that his current situation is a direct punishment and decree from God.
From this painful realization, David applies a simple line of reasoning to the curses hurled at him. If God can alter the very nature of a loving son, He can certainly direct the actions of a bitter enemy. Commentators note that the hostility from this man is entirely natural and expected. First, he is an outsider from the tribe of Benjamin with different loyalties, belonging to a family that has long opposed David. Second, the timing of the curses makes perfect sense. David is already on the run, suffering, and weak. This vulnerability naturally encourages his enemies to strike and fulfill the divine decree against him.
Because of this, David commands his servants to let the man continue cursing. He views the event not as a petty personal dispute, but as a clear sign from God. Expanding on this dynamic, [המלבי״ם] clarifies that God does not strip the man of his free will. Instead, God simply places the idea in his heart. The man was already inclined toward hatred, and since his action is limited to throwing curses rather than attempting murder, it aligns perfectly with his natural disposition and personal choices.