Knowing Krsna in truth and fact means
Srimad-Bhagavatam
SB Canto 1
Those who are desirous of achieving complete perfection in life must submissively hear all topics that are connected with the transcendental activities and qualities of the Personality of Godhead, who acts wonderfully.
The systematic hearing of the transcendental activities, qualities and names of Lord Śrī Kṛṣṇa pushes one towards eternal life. Systematic hearing means knowing Him gradually in truth and fact, and this knowing Him in truth and fact means attaining eternal life, as stated in the Bhagavad-gītā. Such transcendental, glorified activities of Lord Śrī Kṛṣṇa are the prescribed remedy for counteracting the process of birth, death, old age and disease, which are considered to be material awards for the conditioned living being. The culmination of such a perfectional stage of life is the goal of human life and the attainment of transcendental bliss.