The material creation by the Lord of creatures (Viṣṇu) is a chance offered to the conditioned souls to come back home—back to Godhead. All living entities within the material creation are conditioned by material nature because of their forgetfulness of their relationship to Viṣṇu, or Kṛṣṇa, the Supreme Personality of Godhead. The Vedic principles are to help us understand this eternal relation, as it is stated in the Bhagavad-gītā: vedaiś ca sarvair aham eva vedyaḥ. The Lord says that the purpose of the Vedas is to understand Him.
(Bhagavad-Gita---3:10---purport).

Vedaiś ca sarvair aham eva vedyaḥ. That is the end of all Vedic rituals. All rituals, all performances of sacrifices, and everything that is put into the Vedas, including all direction for material activities, are meant for understanding Kṛṣṇa, who is the ultimate goal of life. But because the conditioned souls do not know anything beyond sense gratification, they study the Vedas to that end. But through fruitive activities and sense gratification regulated by the Vedic rituals one is gradually elevated to Kṛṣṇa consciousness
(Bhagavad-Gita---3:26---purport).

In the material existence of life, one is certainly influenced by propensities for lust and desire for dominating the resources of material nature. Desire for overlording and for sense gratification is the greatest enemy of the conditioned soul; but by the strength of Kṛṣṇa consciousness, one can control the material senses, the mind and the intelligence.
(Bhagavad-Gita---3:43---purport).

How activities in Kṛṣṇa consciousness can lead one ultimately to the spiritual goal is described here. There are various activities in Kṛṣṇa consciousness, and all of them will be described in the following verses. But, for the present, just the principle of Kṛṣṇa consciousness is described. A conditioned soul, entangled in material contamination, is sure to act in the material atmosphere, and yet he has to get out of such an environment. The process by which the conditioned soul can get out of the material atmosphere is Kṛṣṇa consciousness. For example, a patient who is suffering from a disorder of the bowels due to overindulgence in milk products is cured by another milk product, namely curds. The materially absorbedconditioned soul can be cured by Kṛṣṇa consciousness as set forth here in the Gītā.
(Bhagavad-Gita---4:24---purport).

A conditioned soul tries to enjoy material happiness again and again. Thus he chews the chewed. But sometimes, in the course of such enjoyment, he becomes relieved from material entanglement by association with a great soul. In other words, a conditioned soul is always engaged in some type of sense gratification, but when he understands by good association that it is only a repetition of the same thing, and he is awakened to his real Kṛṣṇa consciousness, he is sometimes relieved from such repetitive so-called happiness.
(Bhagavad-Gita----18:36----purport).

Kṛṣṇa consciousness is acting according to Kṛṣṇa's order. A conditioned soul, illusioned by the external energy of matter, does not know that the Supreme Lord is the master who is full of knowledge and who is the proprietor of everything. Whatever He desires He can bestow upon His devotees; He is the friend of everyone, and He is especially inclined to His devotee. He is the controller of this material nature and of all living entities. He is also the controller of inexhaustible time, and He is full of all opulences and all potencies. The Supreme Personality of Godhead can even give Himself to the devotee. One who does not know Him is under the spell of illusion; he does not become a devotee, but a servitor of māyā.
(Bhagavad-Gita----18:73--purport).