In this material world, success is always determined by how much wealth a person possesses or how many followers he has etc. But in the spiritual realm, all these material qualifications are considered hurdles unless they evoke a sincere desire to serve the Lord.
The four qualities of Krsna mentioned in this verse are:
1. klesha vinaashanaaya - One who destroys material distress.
2. udaara gunaahvayaaya - One whose magnanimous names and qualities are all-auspicious.
3. mano-vaco-vega puro javaaya - One who travels faster than the speed of mind and words.
4. sarvaaksha maargair agataadhvane - One who cannot be perceived by the material senses.
After alighnment of the mind, heart and intelligence, Gajendra was able to jajaapa paramam jaapyam- chant the supreme mantras for glorification of Krsna. This was possible only because praag-janmany anushiikshitam - Gajendra had learnt these prayers from a devotee in his previous life.
So how then can we realize the Lord ? All we have is only these material senses. What can we do ? To understand this, we have to consider the second part of the verse which says that the realization of the Absolute Truth gets revealed by itself(svayam eva sphuraty adah).
Prabhupada's Formula for Enthusiasm:
Endeavor + Intelligence (in KC) = Enthusiasm.
Endeavor = Practical action in the foreground of spiritual life.
Intelligence = Knack of utilizing everything in the service of Krsna
In any activity, whether it is spiritual or material, the success depends on how much we enjoy doing it. To enjoy an activity, especially in spiritual life, it is important to know why we are doing it, in other words, understand the goal of the activity.
As Supersoul of King Yudhistira, He did not allow the King to be convinced by the words of Vyasa and others, including Himself, because He desired that the King hear instructions from the dying Bhishmadeva, who was another great devotee of the Lord.
Krsna is a performer of superhuman feats. Srila Prabhupada reveals the superhuman activity of the Lord here by his fearless and bold preaching! Afterall, who can start a world-wide movement with a mere forty rupees?!!!
So the goal of all the vedas is to realise the Supreme Lord who is the central theme of the vedas. Krishna confirms this in the Gita by saying, "vedais ca sarvair aham eva vedyah - By the study of all the vedas , I'm alone to be known."