Devotees who are always absorbed in thoughts of Kṛṣṇa will soon see Kṛṣṇa face to face without a doubt. In other words, devotees who are always engaged in Kṛṣṇa consciousness and are fully absorbed in thoughts of Kṛṣṇa certainly return home, back to Godhead. They then see Kṛṣṇa directly, face to face, talk with Him and enjoy His company. This is confirmed in the Bhagavad-gītā (4.9): tyaktvā dehaṁ punar janma naiti mām eti so ’rjuna. (Caitanya-caritāmṛta, Madhya-līlā 13.115)

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There are many instances of this in the revealed scriptures. Dhruva Mahārāja and Prahlāda Mahārāja and many other devotees were able to see the Personality of Godhead face to face apparently in the same body. This means that the quality of a devotee's body changes from material to transcendence. That is the opinion of the authorized Gosvāmīs via the authentic scriptures. (Śrīmad-Bhāgavatam 1.6.28)

Just like the other day we held the Ratha-yātrā festival – chant and take prasādam. That’s all. Organize this all over the world. They will be saved. They will understand Krishna. Sevonmukhe hi jihvādau svayam… [Brs. 1.2.234]. Krishna will appear. You cannot see Krishna. That is not possible. You cannot order Krishna, “Please come, I want to see You.” No. But, when He is pleased with your service, He will come. “Yes, I am here. See Me.” That is the history. Just like Dhruva Maharaja. Dhruva Maharaja was meditating, and within six months, he saw Krishna, face to face. So everyone can see. Everyone will be able (to see Krishna), provided we utilize the tongue. Try to control the tongue and engage in it Krishna’s service.

[An excerpt from a lecture delivered on the Bhagavad Gita 1.10 in London on July 12, 1973]

https://harekrishnarevolution.wordpress.com/2016/02/10/you-can-see-krishna-face-to-face-through-your-tongue/

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See Kṛṣṇa face to face