Lord Krishna advised his son Samba that there could be no other deity like Soorya (Sun), since he is easily sighted on the sky.
He said: “pratyaksham devata suryo jagatchhaykshu divakarah |
tasmaadabhayadhika kaachiddevata naasti shaashvati |
yasmaadidam jagajjaatam layam yaasyati yatracha ||”
Lord Soorya is readily available to the eyes, to all in the whole Universe, beyond whom could be no other deity. The entire ‘Jagat’ (world) has emerged from and also merges in him. Time measurement is facilitated by Him. He is the unique cause for the presence of Grahas (Planets), Nakshatras (Stars), Yogas, Karanaas, Rashis, Aditya, Vasu, Rudra, Vayu, Agni, Ashvani Kumaras, Indra, Prajapati, Dishas, Bhuh, Bhuvah, and Swah. He is the permanent ‘Saakshi’ (evidence/witness) of the mountains, rivers, samudra (sea) and all other ‘charaachara’ or stationary and mobile beings. The world wakes up with him and sleeps due to him.
Vedas and shastras (scriptures) praise Him as Paramatma (Supreme being) and Antaratma (Self of all). He is present everywhere. He is eternal and all-knowing.