Bhakti is some active service. It is not a sentiment. And service means work. Not like the karmīs. Karmī, or anyone who is working, he is working with some taste. Just like the example is given here, a householder is working day and night. Unless he has got some taste . . . suppose one has got wife and children. So to maintain them he has to work very hard. But there is some pleasure in serving the wife and children. This is crude example.
Similarly, bhakti means service with some taste. Svādu svādu pade pade (SB 1.1.19). In the Śrīmad-Bhāgavatam it is said, svādu svādu pade pade. The more you serve, the more you relish taste. Without relishing taste, nobody can render devotional service. It is practical. Svādu svādu pade pade. In every step . . . just like Rūpa Gosvāmī. He was minister in the government of Nawab Hussain Shah. So materially, he was getting honor, money, and therefore he was attached. This is also crude example. So he resigned from the government post and he joined Caitanya Mahāprabhu. So unless he tasted something better, how could he give up his government service? There must be some taste.