Bg 4.36

api ced asi pāpebhyaḥ
sarvebhyaḥ pāpa-kṛt-tamaḥ
sarvaṁ jñāna-plavenaiva
vṛjinaṁ santariṣyasi
Synonyms: 
api — even; cet — if; asi — you are; pāpebhyaḥ — of sinners; sarvebhyaḥ — of all; pāpa-kṛt-tamaḥ — the greatest sinner; sarvam — all such sinful reactions; jñāna-plavena — by the boat of transcendental knowledge; eva — certainly; vṛjinam — the ocean of miseries; santariṣyasi — you will cross completely.
Translation: 
Even if you are considered to be the most sinful of all sinners, when you are situated in the boat of transcendental knowledge you will be able to cross over the ocean of miseries.
Purport: 

Proper understanding of one’s constitutional position in relationship to Kṛṣṇa is so nice that it can at once lift one from the struggle for existence which goes on in the ocean of nescience. This material world is sometimes regarded as an ocean of nescience and sometimes as a blazing forest. In the ocean, however expert a swimmer one may be, the struggle for existence is very severe. If someone comes forward and lifts the struggling swimmer from the ocean, he is the greatest savior. Perfect knowledge, received from the Supreme Personality of Godhead, is the path of liberation. The boat of Kṛṣṇa consciousness is very simple, but at the same time the most sublime.