The purport of Bhagavad Gita Chapter 4 Verse 33 to 35 is that
Oh Arjun! Go to the Tatvadarshi saints who have the complete knowledge and the solution of the Purna Parmatma (Supreme God). Submissively and respectfully prostrate before them, with love and courtesy ask the path to that God. Then those saints will tell the way (Satnaam and Saarnaam) of achieving Purna Parmatma, knowing which you will not be deluded by ignorance. Then you, on the basis of this knowledge only, will first of all know yourself (that how did I get caught in Kaal’s trap) and then will see me (in Kaal form); then you will try your best to get out of here.
The distinctive feature of a Tatvadarshi Saint has been elaborated in Gita Adhyay 15 Shlok 1 to 4.
Further in Bhagavad Gita, Chapter 4 Verse 33 to 42, Kaal God, the narrator of Holy Srimad Bhagavad Gita Ji, said that knowledge yagya is superior to wealth yagya (charity). I am unaware of that Supreme God’s tatvagyan i.e. I do not know. Therefore go to a knowledgeable (Dheeranam) saint who has complete knowledge about the Purna Parmatma and gather full information (the path to Purna Brahm Parmatma); first of all, prostrate before those Purna Saints (complete saints), then serve them, and then with great submissiveness and courteousy ask them the way to attain Purna Parmatma. Then becoming pleased they will explain the entire tatvagyan to you and will do your good by giving naam updesh (initiation). Then you will be able to understand me that I am actually Kaal. First of all you will understand yourself that who are you and how did you get caught in my (Kaal’s) trap. Then you will look at me (considering me Kaal) with a different perspective (not with the previous disposition). When you will come to know about the Purna Parmatma, then you will search for the Complete Guru who will give you Satnaam and Saarnaam. Then after taking jaap of three mantras (in which one is Om + Tat + Sat, these two are indicative mantras which only that Complete Saint can tell) from that Tatvadarshi saint you will become free from all the sins. When you will acquire full knowledge about me (Kaal), then will do naam jaap and bhajan with full interest. The intense interest in Satyanaam and Saarnaam will destroy the sins like fire i.e. that God has this power that He can end all the sins of a living being; whereas, Brahm (Kaal) can not do so. One who has gained complete information will attain supreme peace i.e by doing sadhna of Purna Parmatma will become completely liberated.
A devotee, whose all doubts have been dispelled, has surrendered himself to the Purna Parmatma. That knowledgeable person severs the demon of doubt with the sword of Tattavgyan. Therefore get up i.e become alert, listen to the Tatvagyan from the Tatvadarshi saint and become firm on the scripture-based acts of bhakti.