Devibhagavatapurana 4.15.56

4.15.56

virodhaḥ kīdṛśastatra caikakarmaṇi vai mithaḥ |
vede naikamatiḥ kasmācchāstreṣvapi tathā punaḥ ||

If there be One and only One Lord of this wide infinite Samsâra, then why would there be differences and quarrels amongst each other? Why is there not seen any agreement in opinion and why do the S’âstras differ and why are there so many differences in the opinions held by the knowers of the Vedas.