prayatnād yatamānas tu
yogī saḿśuddha-kilbiṣaḥ
aneka-janma-saḿsiddhas
tato yāti parāḿ gatim
prayatnāt — by rigid practice; yatamānaḥ — endeavoring; tu — and; yogī — such a transcendentalist; saḿśuddha — washed off; kilbiṣaḥ — all of whose sins; aneka — after many, many; janma — births; saḿsiddhaḥ — having achieved perfection; tataḥ — thereafter; yāti — attains; parām — the highest; gatim — destination.
A person born in a particularly righteous, aristocratic or sacred family becomes conscious of his favorable condition for executing yoga practice. With determination, therefore, he begins his unfinished task, and thus he completely cleanses himself of all material contaminations. When he is finally free from all contaminations, he attains the supreme perfection -- Krishna consciousness. Krishna consciousness is the perfect stage of being freed of all contaminations. This is confirmed in the Bhagavad-gita (7.28):
"After many, many births of executing pious activities, when one is completely freed from all contaminations, and from all illusory dualities, one becomes engaged in the transcendental loving service of the Lord."