To know the one who is from the beginning is to know that in you which was never born and does not age, the formless awareness present before every thought and every experience. This is the true source of strength, not the willpower of the ego but the quiet power of Being that abides in you.
When that presence is alive in you, you have overcome the wicked one, which is nothing other than unconsciousness itself, the egoic mind that generates fear and conflict. You do not defeat it by fighting it. You outgrow it, becoming so rooted in present awareness that the old fearful patterns can no longer take you over.