Bhagavan Sri Ramana Maharshi states in Guru Vachaka Kovai:
722. On scrutiny, supreme devotion [parabhakti] and Jnana are in nature one and the same. To say that one of these two is a means to the other is due to not knowing the nature of either of them.
731. Know that the path of Jnana and the path of Bhakti are inter-related. Follow these inseparable two paths without dividing one from the other.
B13. Attending to Self is devotion to the supreme Lord, because the Lord exists as Self.