Mind
For the one who has conquered the mind, the mind is the best of friends; but for one who has failed to do so, his very mind will be his greatest enemy.
Devotees
A devotee is surrendered to whatever Krishna wants. If Krishna wants him to take birth again, he will take, but he prays to remain in the association of devotees.
Risking One’s Life For God Consciousness
There are many examples in history of devotees of the Lord who risked their lives for the spreading of God consciousness. The favorite example is Lord Jesus Christ. He was crucified by the nondevotees, but he sacrificed his life for spreading God consciousness.
Bhagavad Gita 11.55,
Srila Prabhupada
Chanting the Mahamantra
Only the most intelligent people are entitled to engage in the process of chanting the mahamantra.