Bhagavad Gita · Chapter 12: The Path of Devotion

Bhagavad Gita 12.5

kleśo'dhikatarasteṣāmavyaktāsaktacetasām | avyaktā hi gatirduḥkhaṃ dehavadbhiravāpyate ||

The difficulty is greater for those whose minds are set on the unmanifest, for a goal that is unmanifest is hard for embodied beings to reach.

Modern context

Krishna explains why he prefers the personal path for most people: the formless is harder for those who live in bodies. We are creatures of form. We think in images, love particular faces, feel through the senses. Asking such a being to love what has no form at all is asking it to work against its own nature. It can be done, but it is harder. The kinder path uses what we are.