BG Chap 18 - how the devotee attains the Lord

After having described how the jñānī attains sāyujya by first giving up the results of his work, then work itself and then jñana, Kṛṣṇa next explains how the devotee attains Him. The devotee takes shelter of Kṛṣṇa even though he performs all types of actions even material ones such as protecting his family as well as nitya, naimittika and kāmya karmas. But he takes shelter of Kṛṣṇa as his main work. Thus he performs these other activities as secondary actions and has bhakti mixed with karma, rather than karma mixed with bhakti, which has been described in the first six chapters. That devotee attains the Lord’s eternal, indestructible abodes such as Vaikuṇṭha, Mathurā, Dvārakā and Ayodhyā. These abodes exist even during mahāpralaya. The jñānī after undergoing severe austerities attains liberation after many births, but the devotee performing actions and having desires attains the Lord just by taking shelter of Him. This is possible by the powerful and inconceivable mercy of the Lord on the sakāma bhakta, according to Viśvanātha Cakravartī.