Link:—When the Lord cannot be seen by any meritorious deed, how can He be seen then? Lard Krsna, suggests the means, in the next two verses.
bhaktya tvananyaya "sakya ahamevamvidho'rjuna
janatum drastum ca tattvena pravestuth ca parantapa
By unswerving devotion only can I be seen in this form (with four-arms) and known in its essence and even its merger, 0 scorcher of foes. 54.
Bhaktya tvananyaya "sakya ahamevamvidho'rjuna:- Here, the term 'Tu' (Indeed), has been used, to emphasize the point that the four-armed form, holding a conch, a disc, a mace and a lotus each in one of the hands, cannot be seen by any meritorious deeds, but only by exclusive devotion.
Exclusive devotion means, dependence on God only, without having the least dependence on one's own ability, power, intellect or resources etc. This exclusive devotion, is not determined either by the mind or intellect or senses etc., but by one's own self. Restlessness for a vision of the Lord, is specially contributory to the attainment of divine vision. One cannot feel at ease, without His vision, even for a moment. One should become restless, for beholding the Lord. That restlessness for the Lord, burns the sins of infinite births. For such devotees, who have an exclusive devotion, for the Lord, He declares, "He who always and constantly thinks of Me with exclusive devotion, to that Yogi always absorbed in Me, I am easily attainable" (Gila 8/14); and "To those, who worship Me alone, thinking of none else, who are ever devout, I provide, gain and security" (Gita 9/22).
Exclusive devotion also means, no dependence on adoration or meditation or spiritual discipline, for God-realization. Then why to worship the Lord and meditate on Him? These are the means, to do away one's pride. When pride is destroyed, the Lord's grace, manifests itself and it is by His grace, that a devotee attains Him.
Jnatum drastum ca tattvena pravestum:-The Lord, can be known, seen and attained, by exclusive devotion.
The Lord, can also be known in reality, and attained through knowledge (wisdom) (Gita 18/55) but He cannot be forced to reveal Himself, to such a devotee.