God said -
And God's (alone) are the attributes of perfection; invoke Him, then, by these, and stand aloof from all who distort the meaning of his attributes...(ie., by applying them to other beings or objects or, alternatively, by trying to "define" God in human terms and relationships like "father" or "son" - Razi) Q.7:180
...by whichever name you invoke Him, (He is always the One - for) His are all the attributes of perfection...Q 17:110
Prophet said -
1. There are ninety-nine names of God (in the Qur'an). Whoever takes these to heart will enter paradise. - Hadith Bukhari and Muslim. Narrator: Abu Hurairah.
(Not learning by heart or counting on rosary, but to comprehend and imbibe these attributes, which 'set up the ideal for man to attain. The Prophet said "Imbue thyself with divine attributes" - Al Hadis: Mishkat-al-Masabih, Vol.3 Pg.735)