BG Chap 9 - Kṛṣṇa can be attained by everyone

Does the Lord only purify those who commit accidental sin? No, devotion to the Lord does not even consider the inherent faults of a person arising from his birth. Even those born in sinful situations such as women, vaiśyas, śūdras and even the outcastes, if they surrender to Kṛṣṇa, can attain Him. They can become completely freed of ignorance and become specially liberated by associating with devotees. The different kinds of people who are addicted to sinful acts such as the Kirāta, Hūṇa, Yavana, Khasa and others can be purified by taking shelter of the devotees of the Lord. Others who are impure, who lie or have other bad qualities are also indicated here.

It is clearly declared here by the Supreme Lord that in devotional service there is no distinction between the lower and higher classes of people. In the material conception of life there are such divisions, but for a person engaged in transcendental devotional service to the Lord there are not. Everyone is eligible for the supreme destination. Generally, the association of those born in sinful families is not accepted by the higher classes. But the process of devotional service is so strong that the pure devotee of the Supreme Lord can enable people of all the lower classes to attain the highest perfection of life. If people of lower classes can attain Kṛṣṇa, what can be said of the pure brāhmaṇas and the saintly kings? They are fortunate to be born in pure families, and with proper conduct they become devotees.