The word Brahman indicates the complete Supreme Personality of Godhead, who is Sri Krishna. That is the verdict of all vedic literatures.
In Vaikuntha nothing exists but devotional service, rendered through sankirtana and in many other forms. It goes on incessantly, with great enthusiasm spreading the ecstasy of pure love.
The conditioned soul cannot revive his Krishna consciousness by his own effort but out of causeless mercy, Lord Krishna compiled the Vedic literature and its supplements, the Puranas.
The six divisions of surrender are the acceptance of those things favourable to devotional service, the rejection of unfavourable things, the conviction that Krishna will give protection, the acceptance of the Lord as one’s guardian or master, full self-surrender and humility.