Srimad Bhagavatam 3.28.13 prasanna-vadanāmbhojaḿ padma-garbhāruṇekṣaṇam nīlotpala-dala-śyāmaḿ śańkha-cakra-gadā-dharam The Supreme Personality of Godhead has a cheerful, lotus-like countenance with ruddy eyes like the interior of a lotus and a swarthy body like the petals of a blue lotus. He bears a conch, discus and mace in three of His hands. Srila Prabhupada explain: It is definitely recommended herein that one concentrate his mind upon the form of Viṣṇu. There are twelve different forms of Viṣṇu, which are described in Teachings of Lord Caitanya. One cannot concentrate his mind on anything void or impersonal; the mind should be fixed on the personal form of the Lord, whose attitude is cheerful, as described in this verse. Bhagavad-gītā states that meditation on the impersonal or void features is very troublesome to the meditator. Those who are attached to the impersonal or void features of meditation have to undergo a difficult process because we are not accustomed to conc...