In other Upanishads, the concept of Bhakti is indirectly voiced in the form of "Upasana", but here, leaving no room for guesswork, it is explicitly mentioned.
The concept of Bhakti is indirectly voiced in the form of "Upasana". This was in other Upanishads. It was leaving no room for guesswork. This was here. It is explicitly mentioned. This was here.