How can Nirakara become Sakara?
A. Just as water can exist in two states, viz., Nirakara (formless) in the form of vapour and Sakara (with form) in the form of ice, so also Brahman is both Nirakara and Sakara. Nirakara Brahman takes form just for the sake of pious meditation of His Bhaktas. Just as air is formless and takes form as cyclone so also the formless Brahman assumes form.