gṛhe sthitaṁ tad-vihataṁ vinaśyati
jīvaty anātho ’pi tad-īkṣito vane
gṛhe ’bhigupto ’sya hato na jīvati
These are examples of the supremacy of the Lord. Our plans to protect or annihilate do not act, but whatever He thinks of doing actually happens. The examples given in this regard are practical. Everyone has had such practical experiences, and there are also many other clear examples. For instance, Prahlāda Mahārāja said that a child is certainly dependent on his father and mother, but in spite of their presence, the child is harassed in many ways. Sometimes, in spite of a supply of good medicine and an experienced physician, a patient does not survive. Therefore, since everything is dependent on the free will of the Supreme Personality of Godhead, our only duty is to surrender unto Him and seek His protection.