Verse 18-50

सिद्धिं प्राप्तो यथा ब्रह्म तथाप्नोति निबोध मे |

समासेनैव कौन्तेय निष्ठा ज्ञानस्य या परा || 50 ||

“Understand from Me in a concise manner, O Kaunteya, that steadfastness in knowledge is what enables one to attain the perfection of Brāhman.” 
 
Commentary

Lord Krishna imparts knowledge about the significance of unwavering faith and steadfastness in spiritual wisdom. He explains that attaining the perfection of Brāhman, the ultimate reality, is possible through a firm and unwavering commitment to knowledge.


The term “siddhim prāpto ” refers to attaining perfection or accomplishment. Lord Krishna states that just as one achieves siddhi or perfection, they also attain Brāhman, the absolute reality. This implies that the ultimate goal of spiritual realization is to recognize and merge with the eternal and all-pervading Brāhman.


To emphasize the importance of steadfastness in knowledge, Lord Krishna uses the term “samāsena,” meaning in a concise or summarized manner. He encourages Arjuna to grasp the essence of his teachings and the path to attaining Brāhman in a clear and focused way.


The verse mentions the term “niṣṭhā,” which signifies unwavering faith, dedication, and steadfastness. It refers to a resolute commitment to spiritual knowledge and practices without any doubt or wavering. It is through this unwavering dedication that one can steadily progress on the path of spiritual evolution.


Lord Krishna refers to this niṣṭhā as the “parā jñānasya,” the supreme knowledge or higher wisdom. It is the deep understanding and realization of the ultimate truth, transcending all dualities and limitations of the material world. This supreme knowledge leads one to the direct experience and union with Brāhman.


The verse indicates that unwavering faith, steadfastness, and a resolute commitment to spiritual knowledge are the key factors in attaining the highest realization. It highlights the importance of developing a strong foundation of spiritual wisdom and living in alignment with that knowledge.


By cultivating niṣṭhā and unwavering faith in the path of knowledge, individuals can transcend the illusions of the material world and recognize their essential nature as Brāhman. It is through this steadfastness that they attain the highest spiritual perfection and experience the eternal truth.


In summary, Lord Krishna teaches that unwavering faith and steadfastness in spiritual knowledge are essential for attaining the perfection of Brāhman. By cultivating niṣṭhā and staying committed to the path of knowledge, individuals can transcend the limitations of the material world and merge with the ultimate reality.