תהלים, פרק י״ח, פסוק ל״ח

A deep sense of absolute confidence in the ability to defeat an adversary requires a strong inner foundation. This feeling of total capability stems from a clear conscience and a righteous history. A person who has carefully maintained a straight path and avoided failure in the past is assured that they will not fail in the current battle [אלשיך].

Because of this inner guarantee, there is a bold commitment to chase down enemies and catch them. The vow to never turn back reflects a relentless persistence in the pursuit [אבן עזרא]. It is a firm decision to remain in the war [ביאור שטיינזלץ] until the opposing forces face complete destruction [ביאור שטיינזלץ].

This level of fierce determination and uncompromising action is a practical reality rather than just a theoretical idea. A clear historical example of this exact resolve was shown by David during his war against Amalek, where he carried out a relentless campaign until the conflict was entirely finished [רד״ק].