We are introducing this process to become directly a pure devotee. A pure devotee. Devotee, pure and impure? Yes. Impure means those who are still contaminated by these three qualities, sattva-guna, raja-guna, tamo-guna. And pure means above; no contamination. So take directly, because in this age it is very difficult to go step by step. Life is very short. You do not know at any moment. Material world is full of danger, especially in this age.

Srila Prabhupada — July 21, 1974, New Vrindavan