Question: 1. We have heard that those who are celibate from birth go to Brahmaloka, but they are not pure devotees. So how can they go back to Godhead with Brahma? Is it possible that when they are in Brahmaloka they then develop love of Godhead, perform pure devotional service and get qualified to go back?
Answer by Romapada Swami: Those who reach Brahma-loka are qualified for three different types of perfection depending upon how they reached there. Those who attain Satyaloka by dint of pious activities achieve a position in terms of their comparative pious credits, the Hiranyagarbha worshipers as mentioned above are liberated along with Brahma, whereas those who are on the path of devotional service can continue to perfect their devotion in Brahmaloka and attain the spiritual world. (Cf SB 2.2.28 purport)
Question: 2. We have heard that in some lifetime any one us could have been Brahma and after our account of pious activities was exhausted we came back to martyaloka. But from the above verse it seems that Brahma always goes back to Godhead.
Answer by Romapada Swami: Lord Brahma generally attains liberation, but this is not always necessarily the case. Srila Prabhupada explains that Brahma and the inhabitants of his planet are also subject to the laws of material nature and are not free from birth and death; but because Lord Brahma is directly engaged in the service of the Supreme Lord in the management of the Universe, he is able to attain liberation. (Cf. BG 8.17)
In the Brihad-Bhagavatamrita, Lord Brahma states that being always conscious of the imminent destruction of his planet, he is concerned about his liberation and thus engages himself and other inhabitants of his planet in worshiping the Supreme Lord. (Sri Brhat Bhagavatamrta 1.2.62)