“The most beautiful names belong to Allah: so call on Him by them.” (Quran, 7:180)
Allah has described Himself in the Quran through His Names and Attributes. Muslims believe that studying these Names and Attributes is one of the most effective ways of strengthening one’s relationship with God. Each Name and Attribute nourishes a kind of consciousness and humility in man and their study leads one to constantly better their actions.
You can see 99 names of Allah in this application