Repeating the Name of God saved Prahladha from the agony of torture. He learnt the Sacred Name and understood its sweetness. He chanted it constantly and internalized its nectarine taste. When the enraged elephant rushed towards him, he did not call out for his physical parents to rescue him; he instantaneously cried out "Narayana". The Lord is the source of strength for the weak and the strong; He is the Supreme Power. When Prahladha took the Name of the Lord, enraged elephants backed out, no fire could touch him and no poison could affect him. The Lord’s Name was his armour, his shield, his breath, infact his very life. For chanting the Divine Name, no expense is involved, no materials are needed, no special place or time is required. Scholarship, caste or creed does not matter. When a piece of iron is rubbed on a slab of stone, heat is generated. So too, in order to generate sufficient heat to melt the soft heart of the Lord, repeat the Divine Name vigorously and constantly. Then, the Lord will shower His Grace.(Divine Discourse,Oct 3, 1965.)