The history of both Śivaism and Vishnuism illustrates these features. Śiva begins as a wild deity of non-moral attributes. As the religious sense develops he is not rejected like the less reputable deities of the Jews and Arabs but remains and collects round himself other strange wild ideas which in time are made philosophical but not ethical. The rites of the new religion are, if not antagonistic, at least alternative to the ancient sacrifices, yet far from being forbidden they are performed by Brahmans and modern Indian writers describe Śiva as peculiarly the Brahman's god. Finally the Śivaite schools of the Tamil country reject in successive stages the grosser and more formal elements until there remains nothing but an ecstatic and mystical monotheism. Similarly among the Vishnuites Kṛishṇa is the centre of legends which have even less of conventional morality. Yet out of them arises a doctrine that the love of God is the one thing needful so similar to Christian teaching that many have supposed it must be borrowed. The first clear accounts of the worship of Śiva and Vishṇu are contained in the epics and indicate the existence of sectarian religion, that is to say of exclusive devotion to one or other deity. But there is also a tendency to find a place for both, a tendency which culminates in the composite deity Śaṅkara Nârâyaṇa already mentioned. Many of the Purâṇas[457] reflect this view and praise the two deities impartially. The Mahâbhârata not unfrequently does the same but the general impression left by this poem is that the various parts of which it consists have been composed or revised in a sectarian spirit. The body of the work is a narrative of exploits in which the hero Kṛishṇa plays a great part but revised so as to make him appear often as a deity and sometimes as the Supreme Spirit. But much of the didactic matter which has been added, particularly books XII and XIII, breathes an equally distinct Śivaite spirit and in the parts where Kṛishṇa is treated as a mere hero, the principal god appears to be not Vishṇu but Śiva.