Some traditions and experiences point to the divine as being discovered within, particularly in the heart. But what is more true is that we discover who we are, the Self, within. After that, the division of “inside” and “outside” falls away and we discover the Self as the container of all experience.
In the Bhagavad Gita, Krishna describes it like this:
9.4. All this universe is pervaded by unmanifest Me. All beings abide in Me; I do not abide in them.
9.5 …Sustaining beings yet not seated in beings is My Self, the source of beings.
9.6 As the mighty air, moving everywhere, abides ever in space, so do all beings, know thou, abide in Me.
Some describe this as like living in an ocean of being from which all life arises. We are immersed in the divine be we walking or flying or sleeping. We feel separate only because of a confusion in who we are. When we discover who we really are, then our infinity and then our underlying divinity can unfold.
Eventually, we discover that even the Self of consciousness is but a pale reflection of pure divinity.