The Hindu trinity is of Brahma, Vishnu and Shiva. They are respectively the creator, preserver and destroyer of the universe. Each God in the trinity has his consort. To Brahma is Saraswati, the Goddess of knowledge. For Vishnu is Lakshmi - the Goddess of love, beauty and delight. For Shiva is Kali or Parvati, the Goddess of power, destruction and transformation. The three Goddesses are often worshipped in their own right as well as along with their spouses.
It is believed that the triple deities exist in space and time that makes it difficult to explain the true nature of their existence, as well as their true potentials since they allegedly belong to the very highest realms of creation. The spiritual significance of the Trimurti remains that these are the three aspects of supreme reality, like a mighty flow of energy that branches out into three different streams with human awareness being the point of contact.
Brahma the creator - refers to the pursuit of knowledge and creativity, while Vishnu is the preserver - the protector of universal order, the fine balance between karma and dharma. Shiva is the god of destruction - an essential aspect of creation because without destruction you cannot really create anything, such is also the process of inner transformation.