Sikhs worship Ik Onkar, the idea of the creator deity who is also immanent in creation. In Sikhism, the divine presence does not have gender or physical characteristics.
According to Britannica, the name "Ik Onkar" is a combination of two words. The first, "Ik," is the Gurmukhi numeral for "one." The second, "Onkar," means "creator of everything." Sikhism teaches that instead of incarnating in one specific person, God is present inside every part of creation. Because of this belief, Sikhism rejects caste systems. In order to achieve salvation from the mundane cycle of reincarnation, Sikhs believe that people must strive for unity with the eternal divine principle of Akal, which is the supreme reality.