Aum Namah Sivaya. Welcome to Earth Leili; you are one of the few fortunate blessed souls, giving milk for Siva Puja and milk to the monks; doing only good karma in this birth and receiving only the returning good karma.
In our teachings we're both monistic and theistic. In the beliefs of Saivism the idea of the three worlds is the basis and key to understanding temple worship, theism. The inner worlds are there to help you. The essence of the soul is already the same as the essence of God Siva, monism. You just have to find it.