There is no question of believe. Don't bring this question-belief. It is law. Just like there is government, you believe or not believe, who cares for you? That is government. Similarly, you believe or not believe, there is God. If you don't believe in God and do independently whatever you like, then you'll be punishable.
-Radio Interview -- July 27, 1976, London

नारायणपरा वेदा देवा नारायणाङ्गजा: ।
नारायणपरा लोका नारायणपरा मखा: ॥ १५ ॥
The Vedic literatures are made by and are meant for the Supreme Lord, the demigods are also meant for serving the Lord as parts of His body, the different planets are also meant for the sake of the Lord, and different sacrifices are performed just to please Him.
-Shrimad Bhagvatam Canto 2 Chapter 5 Verse 15