why all the hawans and yagyas done as all the happenings are predecided by the god?
If God is everywhere, then is here not in Temples also? Just like hydrogen and oxygen is everywhere, but when both combined in a particular form it is called water. Similarly the Lord incarnates as arca avatara when Deities address installed and invited as per the sastras in Temples. In the Bhagavad gita if is said bhoktaram yajna tapasam sarva loka maheshwaram…… Lord Krishna of Vishnu is the enjoyer and benefactor of all the yajnas, that is why irrespective of the yajnas or havans, the poornahuti is offered to Lord Vishnu in the end. Hari bol.