चौथा दिन सूरज बना तो 3 दिन प्रकाश कहां से आया - The sun became the fourth day so where did the light come from for the third day ?

सृष्टि के पहले दिन ही प्रकाश कैसे हो सकता है यदि चौथे दिन तक सूर्य को ही नहीं रचा गया था, 
चौथा  दिन सूरज बना तो 3 दिन प्रकाश कहां से आया, 
How can there be light on the very first day of creation if the sun was not created until the fourth day,
The sun became the fourth day, so where did the light come from for the third day,