Promise of Bhagavan Krishna

Whatever actions thou dost perform, O Son of Kunti (Arjuna), whether in eating, or in observing spiritual rites, or in gift bestowing, or in self-disciplining—dedicate them all as offerings to Me.

Thus no action of thine can enchain thee with good or evil karma. With thy Self steadfastly anchored in Me by Yoga and renunciation, thou shalt win freedom and come unto Me.
I am impartial toward all beings. To Me none is hateful, none is dear. But those who give Me their heart's love are in Me, as I am in them.

Even a consummate evildoer who turns away from all else to worship Me exclusively may be counted among the good, because of his righteous resolve.

He will fast become a virtuous man and obtain unending peace. Tell all assuredly, O Arjuna, that My devotee never perishes!
Taking shelter in Me all beings can achieve the Supreme Fulfillment—be they those of sinful birth, or women, or Vaishyas, or Sudras.

— The Bhagavad Gita IX:27-32

In these stanzas the lord offers the sweetest solace and the highest hope to all of His children, even the erring and bewildered. Through steadfast practice of yoga meditation, renunciation of desires and attachments by loving dedication of all actions to God, restance, and right resolution, not only can the righteous attain libation, but even the wickedest of men may speedily emerge from sin to sanctity, from ignorance into the healing light of wisdom.

Excerpts from God Talks with Arjuna: The Bhagavad Gita
by Paramahansa Yogananda