In plain words
What is the inner meaning? The question, yatra, where Kṛṣṇa is, does not arise at all; sarvataḥ pāṇipādaṃ sarvatokṣi śiromukhaṃ: He is everywhere. Even so, there is no need to search. When Arjuna (the one whose citta is pure) becomes the bearer of the bow (using all his strength and ability single-mindedly, with courage and daring), victory (the attainment of Mokṣa) is won. This is precisely the inner meaning of that śloka.
To those who have both of these, purity of citta and firm faith, Kṛṣṇa, the Lord of yoga, without any doubt gives His darśan, goes along with them as their companion, encourages them in every way and grants them supreme Ānanda. Kṛṣṇa stands ready at all times to take into Himself those who trust Him. But men are not making themselves into Arjunas, that is all.
On the day of Janmāṣṭamī, you must have Śrī Kṛṣṇa born, each of you, in the place of your own heart. You must gain release from the thirst for sense objects and make the thirst for Kṛṣṇa grow.