Order 1 of Lithias doesn't require any belief in a divine power of the Universe. The second Order of Lithias does ask for your belief that there is a God. This God we believe in is no old man, as is depicted in the picture on the left. God has no real form but instead takes the form of whatever he wants, and simultaneously all that there is. In this order, it is a loose concept that god did not create the universe but is instead the universe itself. That idea isn't driven very hard until Order 6. Having no form, god also has no gender, at least no gender the human mind could conceive of, so though god is referred to as if he was a male, using he/him/his+ pronouns, God is essentially a non-binary being.

God's name is also an abstract concept, but he is most commonly referred to as God, Lord, and Allah. It's best to stick to the names above for god. Though he could be compared to the main god in plenty of other religions and called by that name. For example Zeus from Roman Mythology, but as Zeus was just the King of Gods this wouldn't be ideal, so for the sake of accuracy and general communication & understanding of one another, just refer to him as God, Lord, or Allah (If you speak English.)