“Believe in God; Believe in Him with perfect trust. Consider Him as sweeter than the sweetest of earthly joys. Ponder that He is the incomparable One. Reflect on His glory night and day and at all times. Let the constant remembrance of Him fill the interstices of your being. Meditate that, “I am naught--He alone Is.” Let the worship of God be the goal of your life. Whatsoever you think, that you become. Cherish the Lord in the recess of your heart. Everything, everywhere is subject to His Will. Ultimately it will be seen that he is All in All.” Yogaswami
“SivaPeruman is the non-dual Reality. I glory in contemplating that He and I are inseparably linked in Oneness. Whatever one yearns for, that he becomes. Therefore meditate that Thou and He are in unison. Then shall all thy acts pulsate as His acts. The Supreme Reality Is He. He is immanent everywhere. The One has assumed many forms. He is beyond birth and death, transcending time and timelessness; He is eternal, and ever unchanging. The perfection of Truth illumines All. ” Yogaswami
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.