Bhagavad Gita 10.8-11:
I am the source of everything. Due to Me everything operates. Convinced by this knowledge, the intelligent persons, endowed with love, worship Me.
With minds absorbed in Me, completely dependent on Me, mutually informing each other about Me and speaking about Me, they continuously experience satisfaction and enjoyment.
I give the intelligence to those who constantly desire to be with Me and worship Me with great love, by which they attain My direct association.
To show favor to them, I, by Myself, situated within them, extinguish the darkness born of ignorance with the shining lamp of knowledge.
Bhagavad Gita 15.19-20:
yo mām evam asammūḍho jānāti puruṣottamam sa sarva-vid bhajati māṁ sarva-bhāvena bhārata||
iti guhya-tamaṁ śāstram idam uktaṁ mayānagha etad buddhvā buddhimān syāt kṛta-kṛtyaś ca bhārata||
He who without bewilderment knows Me as Bhagavan knows everything. He worships Me with complete love, O descendent of Bharata.
Thus I have spoken the most secret teaching, O sinless Arjuna. Knowing this, you will be intelligent and will have attained the goal, O descendent of Bharata.
jñāne prayāsam udapāsya namanta eva jīvanti san-mukharitāṁ bhavadīya-vārtām sthāne sthitāḥ śruti-gatāṁ tanu-vāṅ-manobhir ye prāyaśo ’jita jito ’py asi tais tri-lokyām
Those who, even while remaining situated in their established social positions, throw away the process of speculative knowledge and with their body, words and mind offer all respects to descriptions of Your personality and activities, dedicating their lives to these narrations, which are vibrated by You personally and by Your pure devotees, certainly conquer Your Lordship, although You are otherwise unconquerable by anyone within the three worlds.
śreyaḥ-sṛtiṁ bhaktim udasya te vibho kliśyanti ye kevala-bodha-labdhaye teṣām asau kleśala eva śiṣyate nānyad yathā sthūla-tuṣāvaghātinām
My dear Lord, devotional service unto You is the best path for self-realization. If someone gives up that path and engages in the cultivation of speculative knowledge, he will simply undergo a troublesome process and will not achieve his desired result. As a person who beats an empty husk of wheat cannot get grain, one who simply speculates cannot achieve self-realization. His only gain is trouble
śrī-nārada uvāca namas tasmai bhagavate kṛṣṇāyāmala-kīrtaye yo dhatte sarva-bhūtānām abhavāyośatīḥ kalāḥ
Śrī Nārada said[to Narayana Rsi]: I offer my obeisances to Him of spotless fame, the Supreme Lord Kṛṣṇa, who manifests His all-attractive personal expansions so that all living beings can achieve liberation.