SB 3.27.12

The example given herewith is very perfect. The example is that the sun is situated far, far away from the surface of the earth in the sky but its reflection is seen on the pot of water in the corner of a room and the same reflection is reflected on the wall of the room. So the example is that the room is dark and the sun is far away in the sky, still the sun's reflection on the water has illuminated the darkness of the room. So a pure devotee can realize the presence of the Supreme Personality of Godhead similarly in everything by reflection of His energy. As it is confirmed in the Visnu Purana that fire is understood, the presence of fire is understood by heat and light, similarly the Supreme Personality of Godhead, although one without second, by diffusion of His different energy, He is perceived everywhere. This is confirmed in the Īsopanisad that the presence of the Lord is perceived by liberated soul everywhere, exactly like the sunshine and reflection of the sun can be perceived everywhere although the sun is situated far, far away from the surface of the globe.